Home > Sterndrive Parts (Inboard Outboard) > Mercruiser Sterndrives > Exhaust System for Mercruiser > Exhaust Manifold Kits for Mercruiser


Complete Manifolds, Risers, Gaskets, Bellows,
mounting hardware customized for your Mercruiser application
Exhaust Manifold Kits for Mercruiser
Part Number / Price Name / Description
BARSB4MERMK   

$629.00 
   
Quantity in Basket: none
Manifold, Exhaust Kit, Mercruiser GM 305 5.0L, 350 5.7L V8 4"


Exhaust Manifold Kit for Mercruiser, Marine Power Small Block V8 GM 305/350 CID 1987 & up with 4" exhaust
This kit requires a 4" I.D. Exhaust hose to be connected to the riser.
This kit includes:
2 - Barr # MC-20-44354X 4" Risers
Riser for Mercruiser 4 Inch Exhaust Outlet 1987-2003
2 - Barr # MC-1-87114 Manifolds
Exhaust Manifold for Mercruiser GM 305 5.0L, 350 5.7L V8 1983-newer

NOTE: This manifold WILL NOT FIT Dry Joint Exhaust Systems.
Click here if you have a Dry Joint Exhaust

Cross Reference Component Part Numbers
Mercury Quicksilver Manifolds 860246A10, 87114A19
  Risers 807988A2, 44354A3
Osco Manifolds 7114B
  Risers 4354
Barr Manifolds MC-1-87114
  Risers MC-20-44354
GLM Manifolds 51230
  Risers 51140
  Kit (4 Manifolds/Riser) 58232
Sierra Manifolds 18-1953-2
  Risers 18-1976-1
HGE Manifolds 7114
  Risers 4354
Mallory Manifolds 9-40507
  Risers 9-40559


dimensions


Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
Shipping outside of the contiguous US will be sent by email after the order is placed
 
BARSBDJ   

$1,099.00 
   
Quantity in Basket: none
Manifold Exhaust Kit for Mercruiser Dry-Joint GM Small Block V8 2004-Newer


Complete Exhaust Manifold and Riser Kit for Mercruiser 5.0L, 5.7L, 377, 6.2L engines 2004 and newer with Dry Joint Exhaust
This kit includes:

Two Barr # MC-20-864591 4 Inch Dry Joint Exhaust Risers complete with mounting hardware, plugs and your choice of riser gaskets.

Dry Joint Risers

Two Barr # MC-1-865735 Small Block V8 Dry Joint Exhaust Manifolds complete with manifold gaskets, mounting hardware and plugs

Dry Joint Manifolds

How to determine if you have Dry-Joint Exhaust
Click Here to view a larger High Resolution Image of this Kit
NOTE: This manifold kit WILL FIT Dry Joint Exhaust Systems.

Cross References Part Numbers
Mercruiser Manifolds 865735A02
Risers 864591T02
Osco Manifolds 5735
Risers 4591
Barr Manifolds MC-1-865735
Risers MC-20-864591
GLM Manifolds 58660
Risers 51148
Sierra Manifolds not available
Risers not available
Mallory Manifolds 9-40508
Risers not available
HGE Manifolds 5735
Risers not available

Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
Shipping outside of the contiguous US will be sent by email after the order is placed
 
BARV64MER   

$699.00 
   
Quantity in Basket: none
Manifold Exhaust Kit for Mercruiser GM 262 4.3L V6 4"


Exhaust Manifold Kit for Mercruiser, Marine Power V6 1987 & up with 4" exhaust
This kit requires a 4" I.D. Exhaust hose to be connected to the riser.
This kit includes:

2 - Barr # MC-20-44354 4" Risers
risers

2 - Barr # MC-1-99746 Manifolds
manifolds
Includes Gaskets, Fittings and Mounting Hardware

NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
Click here if you have a Dry Joint Exhaust

Cross Reference Component Part Numbers
Mercruiser Manifold: 99746A17
Riser: 807988A2, 44354A3
Osco Manifold: 9745
Riser: 4354
Barr Manifold: MC-1-99746
Riser: MC-20-44354
GLM Manifold: 51220
Riser: 51140
Kit (4 Manifold/Riser): 58222
Sierra Manifold: 18-1952-1
Riser: 18-1976-1
Mallory Manifold: 9-40505
Riser: 9-40559

Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
Shipping outside of the contiguous US will be sent by email after the order is placed

Cast Iron Manifolds and Risers come with a 3 Year Warranty!

dimensions
 
BPIBB3MER   

$579.00 
   
Quantity in Basket: none
Manifold Exhaust Riser Kit for Mercruiser GM 454 7.4L 3 Inch 1983-1986


Exhaust Manifold Kit for Mercruiser, Marine Power Big Block V8 454/502 CID Center Riser with 3" exhaust
This kit requires a 3" I.D. Exhaust hose to be connected to the riser.
This kit includes:
2 - Osco # 8503A 3" Risers
risers
2 - Osco # 9011 Manifolds
manifolds
2 - Osco # 8503-GR Riser Gaskets
riser gaskets
2 - Osco # CW-GH Manifold Gaskets
manfold gaskets
Cross Reference Component Part Numbers
Mercury Quicksilver Manifold: 807078A6, 89011A8
  Riser: 98504A3
Osco Manifold: 9011
  Riser: 8503A
Barr Manifold: MC-1-89011
  Riser: MC-20-98504
GLM Manifold: 51240
  Riser: 51110
Sierra Manifold: 18-1957-1
  Riser: 18-1970-1
Mallory Manifold: 9-40506
  Riser: 9-40557
HGE Manifold: 9011
  Riser: (not available)
Cast Iron Manifolds and Risers come with a 3 Year Warranty!

Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
Shipping outside of the contiguous US will be sent by email after the order is placed

 
BPIBB4MER   

$549.95 
   
Quantity in Basket: none
Manifold Riser Exhaust Kit for Mercruiser GM 454 7.4L 4 Inch Exhaust


Exhaust Manifold Kit for Mercruiser, Marine Power Big Block V8 454/502 CID Center Riser with 4 Inch exhaust. Used on most 454 7.4 Liter engines 1987 and later. 4 Inch means the exhaust hose size that fits the riser is 4 inch inside diameter.
This kit requires a 4" I.D. Exhaust hose to be connected to the riser.



This kit includes:

2 - Barr # MC-20-44354X 4" Risers
OSC4354
2 - Osco # 9011 Manifolds
OSC9011
2 - Osco # CW-GH Manifold Gaskets
OSCCW-GH
Cross Reference Component Part Numbers
Mercruiser Manifold: 807078A6, 89011A8
Riser: 807988A2, 44354A3
Osco Manifold: 9011
Riser: 4354
Barr Manifold: MC-1-89011
Riser: MC-20-44354X
GLM Manifold: 51240
Riser: 51140
Sierra Manifold: 18-1957-1
Riser: 18-1976-1
Mallory Manifold: 9-40506
Riser: 9-40559
HGE Manifold: 9011
Riser: 4354

Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
Shipping outside of the contiguous US will be sent by email after the order is placed

Cast Iron Manifolds and Risers come with a 3-Year Warranty
 
BPIMANMERCHVI-B   

$799.00 
   
Quantity in Basket: none
Manifold Exhaust Kit for Mercruiser GM 305 5.0L, 350 5.7L V8, Inboard


Complete Exhaust Manifold Kit Converts older log style manifolds to center rise design. Fits older Mercruiser (Chevy) Small Block V8 Inboards
Includes:
  • manifolds
  • risers
  • hardware
  • exhaust connectors
  • alternator bracket
  • filter bracket
  • solenoid bracket
  • thermostat housing
  • hoses to water pump
  • hoses to manifold
  • NOTE: Does not include Hose from transom to thermostat housing Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    BPIMANMERCHVI-O   

    $799.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser GM 305 5.0L, 350 5.7L V8, Inboard, Outboard


    Complete Exhaust Manifold Kit Converts older log style manifolds to center rise design. Fits older Mercruiser (Chevy) Small Block V8 Inboard/Outboards
    Includes:
  • manifolds
  • risers
  • hardware
  • exhaust connectors
  • alternator bracket
  • filter bracket
  • solenoid bracket
  • thermostat housing
  • hoses to water pump
  • hoses to manifold
  • NOTE: Does not include Hose from transom to thermostat housing Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    BPIMANMERFRDI-B   

    $799.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser Ford 302 5.0L, 351 5.8L V8, Inboard


    Complete Exhaust Manifold Kit Converts older log style manifolds to center rise design. Fits older Mercruiser (Ford) Small Block V8 Inboards
    Includes:
    • Manifolds
    • Risers
    • Hardware
    • Exhaust Connectors
    • Filter Bracket
    • Solenoid Bracket
    • Thermostat Housing
    • Hoses to Water Pump
    • Hoses to Manifold

    NOTE: Does not include Hose from transom to thermostat housing

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    BPIMANMERFRDI-O   

    $799.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser Ford 302 5.0L, 351 5.8L V8, Inboard-Outboard


    Complete Exhaust Manifold Kit Converts older log style manifolds to center rise design. Fits older Mercruiser (Ford) Small Block V8 Inboard/Outboards
    Includes:
    • Manifolds
    • Risers
    • Hardware
    • Exhaust Connectors
    • Filter Bracket
    • Solenoid Bracket
    • Thermostat Housing
    • Hoses to Water Pump
    • Hoses to Manifold

    NOTE: Does not include Hose from transom to thermostat housing

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    BPISB3MER   

    $559.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser GM 305 5.0L, 350 5.7L V8 3"


    Exhaust Manifold Kit for Mercruiser and Marine Power with the Small Block V8 GM 305/350 CID Center Risers 1983-1986 with 3" exhaust
    This kit has 3 inch center risers, and was used from 1983 thru 1986 (partial).
    This kit includes:
    2 - Barr # MC-20-98504 3" Risers
    Exhaust Riser for Mercruiser 3 Inch Exhaust 98504A3

    2 - Barr # MC-1-87114 Manifolds
    Exhaust Manifold for Mercruiser GM 305 5.0L, 350 5.7L V8 1983-newer


    Necessary hardware, gaskets and plugs included

    This Kit will replace the Original Mercruiser equipment.

    SB3MER


    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust

    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifolds 860246A10, 87114A19
      Risers 98504A3
    Osco Manifolds 7114B
      Risers 8503A
    Barr Manifolds MC-1-87114
      Risers MC-20-98504
    GLM Manifolds 51230
      Risers 51110
      Kit (4 Manifold/Riser) 58231
    Sierra Manifolds 18-1953-2
      Risers 18-1970-1
    HGE Manifolds 7114
      Risers (not available)
    Mallory Manifolds 9-40507
      Risers 9-40557

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    BPISBDJ   

    $799.95 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser Dry Joint Small Block V8 2004 Newer


    Complete Exhaust Manifold and 14° Riser Kit for Mercruiser 5.0L, 5.7L, 377, 6.2L engines 2004 and newer with Dry Joint Exhaust
    Kit sold as pictured.
    This kit includes:

    2 - Osco # 4591 4 Inch 14° Osco Dry Joint Exhaust Risers
    OSC4591

    2 - HGE # 5735 Small Block V8 Dry Joint Osco Exhaust Manifolds
    OSC5735

    Includes

    • Manifold Gaskets
    • Stainless Steel Plate Gaskets
    • Open Seal Rings
    • Restrictor Seal Rings
    • Closed Seal Rings
    • Bolts 3/8"-16UNC x 5"
    • Lock Washers
    • Steel Plugs 3/4" NPT
    • Brass Plugs 1/8" NPT

    Tall Dry Joint Elbow
    Mercury Quicksilver # 864591T02 serial # 310000 and above (post 2005 models) -
    Measures 6.7" from elbow flange to mounting bolt bass pad.
    2005 and up Dry Joint Exhaust illustration click to enlarge
    Mercury Dry Joint Small Block V8 with 14° Risers 2005 and newer
    Cross References Part Numbers
    Mercruiser Manifolds 865735A02
    Risers 864591T02
    Osco Manifolds 5735
    Risers 4591
    Barr Manifolds MC-1-865735
    Risers MC-20-864591
    GLM Manifolds 58660
    Risers 51148
    Sierra Manifolds not available
    Risers not available
    Mallory Manifolds 9-40508
    Risers not available
    HGE Manifolds 5735
    Risers not available
    How to determine if you have Dry-Joint Exhaust
    NOTE: This manifold kit WILL FIT Dry Joint Exhaust Systems.
    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    BPISBDJ7   

    $799.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser Short Dry Joint Small Block V8, 7 Degree Short Risers pre 2005


    Complete Exhaust Manifold and Riser Kit for Mercruiser 5.0L, 5.7L, 377, 6.2L engines pre 2005 Small Block with short Dry Joint Exhaust and 7° Down Angle Risers
    Kit sold as pictured.
    This kit includes:

    2 - HGE # 4309 4 Inch HGE 7° Dry Joint Exhaust Risers
    Riser Dry Joint 7 degree

    2 - HGE # 5735 Small Block V8 Dry Joint Osco Exhaust Manifolds
    HGE5735

    Includes

    • Manifold Gaskets
    • Stainless Steel Plate Gaskets
    • Open Seal Rings
    • Restrictor Seal Rings
    • Closed Seal Rings
    • Bolts 3/8"-16UNC x 5"
    • Lock Washers
    • Steel Plugs 3/4" NPT
    • Brass Plugs 1/8" NPT
    Short Dry Joint Elbow
    Mercury Marine Quicksilver # 864309T02 serial # 309999 and below
    (pre 2005 models)
    Measures 5.2" from elbow flange to mounting bolt bass pad.
    Dry Joint pre 2004 - click to enlarge
    Mercury Dry Joint Small Block V8 pre-2005
    Cross Reference Component Part Numbers
    Mercruiser Manifold: 865735A02
      Riser: 864309T02
    Osco Manifold: 5735
      Riser: (not available)
    Barr Manifold: MC-1-865735
      Riser: (not available)
    Mallory Manifold: 9-40508
      Riser: (not available)
    HGE

    Manifold:

    5735
      Riser: 4309

    How to determine if you have Dry-Joint Exhaust
    Click Here to view a larger High Resolution Image of this Kit
    NOTE: This manifold kit WILL FIT Dry Joint Exhaust Systems.
    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

     
    BPIV63MER   

    $499.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser GM 262 4.3L V6 3"


    Exhaust Manifold Kit for Mercruiser V6 Before 1986 with 3 Inch exhaust
    This kit requires a 3 Inch I.D. Exhaust hose to be connected to the riser.
    This kit includes:

    2 - Barr # MC-20-98504 3" Risers
    risers

    2 - HGE # 9746 Manifolds
    manifolds

    V63MER Measurements

    Mercruiser used 3.0" Risers from 1983-1986. If you do have a 1986, measure the outlet on the riser. This was a transition year & some are 4.0".

    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust

    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifold: 99746A17
    Riser: 98504A3
    Osco Manifold: 9745
    Riser: 8503A
    Barr Manifold: MC-1-99746
    Riser: MC-20-98504
    GLM Manifold: 51220
    Riser: 51110
    Kit (4 Manifold/Riser): 58221
    Sierra Manifold: 18-1952-1
    Riser: 18-1970-1
    Mallory Manifold: 9-40505
    Riser: 9-40557

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

    3-Year Warranty
     
    BPIV64MER   

    $569.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser GM 262 4.3L V6 4"


    Exhaust Manifold Kit for Mercruiser, Marine Power V6 1987 & up with 4" exhaust
    This kit requires a 4" I.D. Exhaust hose to be connected to the riser.
    This kit includes:

    2 - GLM # 51140 4" Risers
    risers

    2 - HGE # 9746 Manifolds
    manifolds

    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust

    dimensions

    Cross Reference Component Part Numbers
    Mercruiser Manifold: 99746A17
    Riser: 807988A2, 44354A3
    Osco Manifold: 9745
    Riser: 4354
    Barr Manifold: MC-1-99746
    Riser: MC-20-44354
    GLM Manifold: 51220
    Riser: 51140
    Kit (4 Manifold/Riser): 58222
    Sierra Manifold: 18-1952-1
    Riser: 18-1976-1
    Mallory Manifold: 9-40505
    Riser: 9-40559
    HGE Manifold: 9746
    Riser: 4354

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

    3-Year Warranty
     
    BPIV6DJ   

    $799.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser Dry Joint V6 4.3L 14 Degree Riser


    NEW CONFIGURATION...BETTER PRICE!
    Complete Exhaust Manifold and Riser Kit for Mercruiser V6 with Dry Joint Exhaust
    It fits MCM GM 4.3L V6 262 CID 2002 and newer (Serial Numbers: 0M615000 and up)
    Click Here to view a larger High Resolution Image of this Kit
    This kit includes:
  • Two HGE # 4612 V6 Dry Joint Exhaust Manifolds
  • Two Osco # 4591 4 Inch 14° Dry Joint Exhaust Risers
  • Two Mounting Kits (includes 2 manifold gaskets, 2 riser gaskets, 2 open seal rings, 2 restrictor seal rings, 4 closed seal rings, mounting hardware and plugs as pictured)

  • NOTE: Riser bolts are NOT included in this kit.
    Kit sold as pictured.
    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifold: 864612T01, 99746A17
    Riser: 864591T02
    Osco Manifold: (not available)
    Riser: 4591
    Barr Manifold: (not available)
    Riser: MC-20-864591
    Mallory Manifold: 9-40509
    Riser: 9-40560
    HGE Manifold: 4612
    Riser: 4309 (7° version)

    How to determine if you have Dry-Joint Exhaust
    NOTE: This manifold kit WILL FIT Dry Joint Exhaust Systems.
    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

     
    BPIV6DJ7   

    $799.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit Mercruiser Dry Joint V6 4.3L 7 Degree Riser 2003-05


    Complete Exhaust Manifold and Riser Kit for Mercruiser V6 with short Dry Joint Exhaust and 7° Down Angle Risers
    It fits MCM GM 4.3L V6 262 CID 2002 and newer (Serial Numbers: 0M615000 and up)
    Click Here to view a larger High Resolution Image of this Kit
    This kit includes:
  • Two HGE # 4612 V6 Dry Joint Exhaust Manifolds
  • Two HGE # 4309 4 Inch 7° Dry Joint Exhaust Risers
    Riser
  • Two Mounting Kits (includes 2 manifold gaskets, 4 riser gaskets, 4 open seal rings, 4 restrictor seal rings, 8 riser bolts, 8 closed seal rings, mounting hardware and plugs as pictured)
  • Kit sold as pictured.

    Short Dry Joint Elbow
    Mercury Quicksilver # 864309T02 serial # 309999 and below
    (pre 2005 models)
    Measures 5.2" from elbow flange to mounting bolt bass pad.
    Dry Joint pre 2004 - click to enlarge
    Mercury Dry Joint Small Block V8 pre-2005

    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifold: 864612T01, 99746A17
    Riser: 864309T02
    Osco Manifold: (not available)
    Riser: (not available)
    Barr Manifold: (not available)
    Riser: (not available)
    Mallory Manifold: 9-40509
    Riser: (not available)
    HGE Manifold: 4612
    Riser: 4309

    How to determine if you have Dry-Joint Exhaust
    NOTE: This manifold kit WILL FIT Dry Joint Exhaust Systems.
    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

     
    GLM58990   

    $1,129.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser V8 Log Style to Center Rise Conversion


    Complete Kit to convert Log Style Manifolds used prior to 1983 to the later design Center Rise Manifolds
    Fits: GM 305 & 350 CID with 3" or 4" Y-Pipe
    NOTE: Not for use on engines with the high mounted power steering pump.

    Converts the log or end riser manifolds to the later, more efficient center rise design. Includes manifolds, risers, elbows, brackets, thermostat housing, hoses fittings and brackets to mount your accessories.

    GLM Cast Iron Manifolds and Risers come with a 3-year limited warranty (PDF)! Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

     
    GLM58992   

    $999.95 
       
    Quantity in Basket: none
    Manifold Conversion Kit for Mercruiser V6


    Manifold Conversion Kit is designed to convert all Single Piece Exhaust Manifolds to the Center Riser Manifolds on V6 4.3L Engines with GM 262 CID Blocks from 1996 to 2000 that have Raw Water Cooling.
    Kit includes 2 Manifolds, 2 Risers, 2 Elbows, Exhaust Tubes, Gaskets, Hardware (as pictured)
    *Does NOT contain original exhaust tube (OEM: 32-807458T) to be used with original Y-Pipe. You may re-use original exhaust tube with this kit.
    Used to replace One-Piece manifold/risers like these:
    Mercruiser V6 1-piece riser-manifold
    GLM # 58992 looks like this when it is assembled
    Mercruiser V6 1-piece riser-manifold


    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifolds 99746A17
      Risers 807988A2, 44354A3
    Osco Manifolds 9745
      Risers 4354
    Barr Manifolds MC-1-99746
      Risers MC-20-44354
    GLM Manifolds 51220
      Risers 51140
    Sierra Manifolds 18-1952-1
      Risers 18-1976-1
    HGE Manifolds 9746
      Risers 4354
    Mallory Manifolds 9-40505
      Risers 9-40559

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Cast Iron Exhaust Parts come with a 3-Year Manufacturer's limited warranty!
     
    GLMBB4MER   

    $579.95 
       
    Quantity in Basket: none
    Exhaust Kit Mercruiser GM Big Block 4 Inch Exhaust


    This Exhaust Kit fits Mercruiser GM Big Block V8 with 4 " Center Riser Exhaust.
    This kit requires a 4" I.D. Exhaust hose to be connected to the riser.
    Includes 2 GLM51240 Manifolds, 2 GLM51140 Risers, 2 Manifold Gaskets, 2 Riser Gaskets.
    GLM Cast Iron Manifolds and Risers come with a 3-year limited warranty (PDF)! Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    GLMSB4MER   

    $549.95 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser GM 5.0L 305 5.7L 350 4 Inch 1987-2003


    This Exhaust Manifold Riser Kit fits Mercruiser, Marine Power GM Small Block V8 with 4" Center Riser Exhaust from 1987 to 2003.

    After 2003 Mercruiser came out with the Dry Joint exhaust system. This kit has all provisions for bolting the Ignition box and shift junction box and accepts all other original fittings and brackets. This kit includes Riser Bolts.

    This kit requires a 4" I.D. Exhaust hose to be connected to the riser.
    Includes:
    2 GLM51140 Risers
    risers
    2 GLM51230 Manifolds
    manifolds


    NOTE: This manifold WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust

    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifolds 860246A10, 87114A19
      Risers 807988A2, 44354A3
    Osco Manifolds 7114B
      Risers 4354
    Barr Manifolds MC-1-87114
      Risers MC-20-44354
    GLM Manifolds 51230
      Risers 51140
      Kit (4 Manifolds/Riser) 58232
    Sierra Manifolds 18-1953-2
      Risers 18-1976-1
    HGE Manifolds 7114
      Risers 4354
    Mallory Manifolds 9-40507
      Risers 9-40559

    dimensions
    GLM Cast Iron Manifolds and Risers come with a 3-year limited warranty

    GLM Marine Parts
    3-Year Warranty

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

     
    GLMSBF4BAR   

    $459.95 
       
    Quantity in Basket: none
    Exhaust Kit, Barr Style, Ford Small Block 4"


    This Exhaust Kit fits Ford Small Block V8 with 4" Center Riser Barr Style Exhaust.
    This kit requires a 4" I.D. Exhaust hose to be connected to the riser. The outlet on this riser is 4 inches and this kit fits the 289-302-351 Ford marine engine.
    This is NOT a Mercruiser style replacement exhaust.

    This is NOT a Mercruiser style replacement exhaust.
    This kit includes:

    2 - GLM # 56140 Risers
    Riser
    2 - GLM # 56250 Manifolds
    Manifold
    2 -Riser Gaskets
    riser gaskets
    2 - Manifold Gaskets
    manifold gaskets
    Cross Reference Component Part Numbers
    OEM Manifolds FM-1-83
      Risers 20-0100
    Osco Manifolds FL994
      Risers 99204
    Barr Manifolds FM-1-83
      Risers 20-0100
    GLM Manifolds 56250
      Risers 56140
    Sierra Manifolds 18-1998-1
      Risers 18-1939
    HGE Manifolds 1-81
      Risers (not available)
    Mallory Manifolds 9-40111
      Risers 9-40113


    Cast Iron Manifolds and Risers come with a 3-year limited warranty!

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed


    This is NOT a Mercruiser style replacement exhaust.
    GLMV64MER   

    $569.95 
       
    Quantity in Basket: none
    Exhaust Manifold Riser Kit for Mercruiser GM V6 4.3L 1987-2002 4 Inch


    Exhaust Manifold Riser Kit for Mercruiser, V6 1987 to 2002 with 4 Inch exhaust and a two piece exhaust system. Accepts Ignition Box and shift Junction box and all other factory brackets and fittings.

    This kit includes:
    dimensions

    2 - GLM # 51140 4" Risers
    risers

    2 - GLM # 51220 Manifolds
    manifolds
    Includes Gaskets, Fittings and Riser Mounting Hardware.

    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust

    Cross Reference Component Part Numbers
    Mercruiser Manifold: 99746A17
    Riser: 807988A2, 44354A3
    Osco Manifold: 9745
    Riser: 4354
    Barr Manifold: MC-1-99746
    Riser: MC-20-44354
    GLM Manifold: 51220
    Riser: 51140
    Kit (4 Manifold/Riser): 58222
    Sierra Manifold: 18-1952-1
    Riser: 18-1976-1
    Mallory Manifold: 9-40505
    Riser: 9-40559

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

    GLM Marine Parts
    3-Year Warranty
     
    HGEBB4MER   

    $599.00 
       
    Quantity in Basket: none
    Manifold, Exhaust Kit, Mercruiser GM 7.4L-454, 8.2L-502 V8 4"


    Exhaust Manifold Kit for Mercruiser, Marine Power Big Block V8 454/502 CID Center Riser with 4 Inch exhaust. Used on most 454 7.4 Liter engines 1987 and later. 4 Inch means the exhaust hose size that fits the riser is 4 inch inside diameter.
    This kit requires a 4" I.D. Exhaust hose to be connected to the riser.



    This kit includes:

    2 - HGE # 4354 4" Risers
    riser
    2 - HGE # 9011 Manifolds
    HGE9011
    Cross Reference Component Part Numbers
    Mercruiser Manifold: 807078A6, 89011A8
    Riser: 807988A2, 44354A3
    Osco Manifold: 9011
    Riser: 4354
    Barr Manifold: MC-1-89011
    Riser: MC-20-44354X
    GLM Manifold: 51240
    Riser: 51140
    Sierra Manifold: 18-1957-1
    Riser: 18-1976-1
    Mallory Manifold: 9-40506
    Riser: 9-40559
    HGE Manifold: 9011
    Riser: 4354

    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust
    Cast Iron Manifolds and Risers come with a 3-year limited warranty!

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

     
    HGEBB4MER-ALUM   

    $899.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit Aluminum for Mercruiser GM 7.4L 454 8.2L 502 V8 4 Inch


    Aluminum Exhaust Manifold Kit which fits Mercruiser GM Big Block V8 with 4" Center Riser Exhaust.

    Put your boat on a diet! This kit weighs only 61 lbs as compared to 150 lbs for the cast iron version.
    This kit has a 4 Inch Exhaust outlet and accepts all factory accessories.
    Replacement for OEM exhaust systems from 1987 and up.
    Includes 2 HGE9011ALUM Manifolds, 2 HGE4354ALUM Risers, Manifold Gaskets, Riser Gaskets and Mounting Hardware.

    Extra Shipping applies for Aluminum Manifold/Riser Kits: $29.50 for states east of the Mississippi, $39.50 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    HGESB4MER   

    $599.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit for Mercruiser GM 5.0L 305 5.7L 350 4 Inch 1987-2003


    Manifold Exhaust Kit for Mercruiser GM 5.0L 305 5.7L 350 4 Inch 1987-2003
    Exhaust Manifold Kit which fits Mercruiser, Marine Power GM Small Block V8 with 4" Center Riser Exhaust.
    This kit requires a 4" I.D. Exhaust hose to be connected to the riser.
    Includes 2 HGE # 7114 Manifolds, 2 HGE # 4354 Risers, Manifold Gaskets, Riser Gaskets for both fresh water and raw water cooling and mounting hardware.

    This kit includes:
    2 - HGE # 4354 4" Risers
    risers
    2 - HGE # 7114 Manifolds
    manifolds

    This Kit will replace the Original Mercruiser equipment.

    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust
    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifolds 860246A10, 87114A19
      Risers 807988A2, 44354A3
    Osco Manifolds 7114B
      Risers 4354
    Barr Manifolds MC-1-87114
      Risers MC-20-44354
    GLM Manifolds 51230
      Risers 51140
      Kits (4 Manifolds/Risers) 58232
    Sierra Manifolds 18-1953-2
      Risers 18-1976-1
    HGE Manifolds 7114
      Risers 4354
    Mallory Manifolds 9-40507
      Risers 9-40559


    3-Year Warranty

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

     

     
    HGESB4MER-ALUM   

    $779.00 
       
    Quantity in Basket: none
    Manifold Exhaust Kit Aluminum for Mercruiser GM 5.0L 305 5.7L 350 V8 4 Inch


    Aluminum Exhaust Manifold Kit which fits Mercruiser and Marine Power GM Small Block V8 with 4" Center Riser Exhaust.
    Put your boat on a diet!!! This kit only weighs 57lbs compared to its cast iron counterpart weighing in at 140lbs!!
    This kit has a 4 Inch Exhaust Outlet.
    Will accept all factory Mercruiser accessories. Direct replacement for OEM exhaust systems from 1987 to 2002.
    Includes 2 HGE7114ALUM Manifolds, 2 HGE4354ALUM Risers, Manifold Gaskets, Riser Gaskets for both fresh water and raw water cooling and mounting hardware.

    This kit includes:
    2 - HGE # 4354A 4" Risers
    risers
    2 - HGE # 7114A Manifolds
    manifolds

    This Kit will replace the Original Mercruiser equipment.

    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust
    Cross Reference Component Part Numbers
    Mercury Quicksilver Manifolds 860246A10, 87114A19
      Risers 807988A2, 44354A3
    Osco Manifolds 7114B
      Risers 4354
    Barr Manifolds MC-1-87114
      Risers MC-20-44354
    GLM Manifolds 51230
      Risers 51140
      Kits (4 Manifolds/Risers) 58232
    Sierra Manifolds 18-1953-2
      Risers 18-1976-1
    HGE Manifolds 7114, 7114A
      Risers 4354, 4354A
    Mallory Manifolds 9-40507
      Risers 9-40559

    3 Year Warranty!

    Extra Shipping applies for Aluminum Manifold/Riser Kits: $29.50 for states east of the Mississippi, $39.50 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed
     
    HGEV64MER   

    $629.00 
       
    Quantity in Basket: none
    Manifold Kit Exhaust for Mercruiser GM 4.3L 262 V6 4 Inch 1987-2002


    Exhaust Manifold Kit for Mercruiser, Marine Power V6 1987 & up with 4" exhaust
    This kit requires a 4" I.D. Exhaust hose to be connected to the riser.
    This kit includes:

    2 - Barr # MC-20-44354X 4" Risers
    risers

    2 - HGE # 9746 Manifolds
    manifolds

    NOTE: This exhaust kit WILL NOT FIT Dry Joint Exhaust Systems.
    Click here if you have a Dry Joint Exhaust

    Cross Reference Component Part Numbers
    Mercruiser Manifold: 99746A17
    Riser: 807988A2, 44354A3
    Osco Manifold: 9745
    Riser: 4354
    Barr Manifold: MC-1-99746
    Riser: MC-20-44354
    GLM Manifold: 51220
    Riser: 51140
    Kit (4 Manifold/Riser): 58222
    Sierra Manifold: 18-1952-1
    Riser: 18-1976-1
    Mallory Manifold: 9-40505
    Riser: 9-40559
    HGE Manifold: 9746
    Riser: 4354

    Extra Shipping applies for Manifold/Riser Kits: $59 for states east of the Mississippi, $79 for states west of the Mississippi
    Shipping outside of the contiguous US will be sent by email after the order is placed

    Genuine Barr Parts
    3-Year Warranty

    dimensions