Gaskets Mount Kits etc.

Gasket Riser Blank for Mercruiser 1983 and Up Closed Cooling Replaces 27-41811

OSC8503-GB


Gasket Riser Blank for Mercruiser 1983 and Up Closed Cooling Replaces 27-41811

Block off Riser Gasket used on Mercruiser V6 & V8 engines with center riser manifolds from 1983 & up. This is used when the manifolds are...

$8.95
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 Limited Availability - Please Call 
Riser Gasket, Open for Mercruiser

OSC8503-GO


Riser Gasket, Open for Mercruiser

Open Riser Gasket used on Mercruiser V6 & V8 engines with center riser manifolds from 1983 & up. It fits Osco # 4354, Osco # 8503A &...

$7.00
Riser Gasket, Restrictor for Mercruiser

OSC8503-GR


Riser Gasket, Restrictor for Mercruiser

Restricted Riser Gasket used on Mercruiser V6 & V8 engines with center riser manifolds from 1983 & up. It fits Osco # 4354, Osco # 8503A...

$7.00
Plate Block Off Stainless Steel for Mercruiser Center Riser Fresh Water Cooling

OSC8503-SS


Plate Block Off Stainless Steel for Mercruiser Center Riser Fresh Water Cooling

Direct replacement stainless fresh water cooling block off plate for use with Mercruiser Center Riser Non Dry Joint Exhaust Systems.

$15.95
Riser Mounting Kit for Mercruiser OSC8503A Riser

OSC8503A-MK


Riser Mounting Kit for Mercruiser OSC8503A Riser

Mounting Kit fits Osco # 8503A risers Replaces: GLM # 53300; Sierra # 18-8529; Mallory # 9-40580

$7.95
Riser Gasket for Mercruiser 3.7L

OSC8561-G


Riser Gasket for Mercruiser 3.7L

Riser / Elbow gasket for a 3.7L with an aluminum manifold. It is used with Riser Osco # 8561 with aluminum manifold. (same as GLM32470)

$12.95
Riser Mounting Kit for Mercruiser OSC8561 Risers

OSC8561-MK


Riser Mounting Kit for Mercruiser OSC8561 Risers

Mounting Kit fits Osco # 8561 risers on Mercrusier 3.7L Replaces: Sierra # 18-8530; Mallory 9-40581

$14.95
Manifold Mounting Kit for Mercruiser OSC8759 Manifolds

OSC8759-MK


Manifold Mounting Kit for Mercruiser OSC8759 Manifolds

Mounting Kit fits Osco # 8759 manifolds Replaces: Sierra # 18-8531; Mallory # 9-40574

$29.95
Manifold Mounting Kit for Mercruiser OSC9011 Manifolds

OSC9011-MK


Manifold Mounting Kit for Mercruiser OSC9011 Manifolds

Mounting kit for a Mercruiser Center Riser Exhaust Manifold on Big Block applications. The kit includes a manifold gasket and bolts for one side and...

$12.95
Manifold Mounting Kit for Mercruiser OSC9745 Manifolds

OSC9745-MK


Manifold Mounting Kit for Mercruiser OSC9745 Manifolds

Mounting Kit fits Osco # 9745 manifolds Replaces: GLM # 32175; Sierra # 18-8533; Mallory # 9-40576

$12.95
Gasket Riser for Barr Generic and Indmar OEM Risers 1-0107

OSC992-G


Gasket Riser for Barr Generic and Indmar OEM Risers 1-0107

Gasket Riser for Barr Generic and Indmar OEM Risers. Use by Marine Power and Some Crusader Champion Series Engines. Gasket allows water to flow...

$7.00
Gasket Riser for Generic Barr and Indmar Style Blockoff FWC 1-0105

OSC992-G-FW


Gasket Riser for Generic Barr and Indmar Style Blockoff FWC 1-0105

Riser Gasket for Barr Style, Marine Power and Indmar Fresh Water Cooled applications. Does not allow water flow between the Manifold and Riser....

$7.00
Riser Mounting Kit, fits OSC992 Risers for Mercruiser, Volvo Penta

OSC992MK


Riser Mounting Kit, fits OSC992 Risers for Mercruiser, Volvo Penta

Mounting Kit fits Osco # 992 risers Replaces: Barr # 20-0082-P; Sierra # 18-4364; Mallory # 9-40171

$7.95
Riser Mounting Kit, for OSC992 Risers, Fresh Water Cooled

OSC992MK-FW


Riser Mounting Kit, for OSC992 Risers, Fresh Water Cooled

Mounting Kit fits Osco # 992, Osco # 99204, and Osco # 2018 risers on Fresh Water Cooled applications Replaces: Sierra # 18-8535; Mallory # 9-40173

$7.95
Manifold Mounting Kit, fits OSC994 Manifolds for Mercruiser, Volvo Penta

OSC994MK


Manifold Mounting Kit, fits OSC994 Manifolds for Mercruiser, Volvo Penta

Manifold Mounting Kit for a Barr Style Manifold used on a Small Block Chevrolet V8. It is used with manifold Osco # 994. Replaces: Sierra # 18-8536;...

$12.95
Gasket End Plate for Osco B-Series Exhaust Manifold End Caps

OSCBG


Gasket End Plate for Osco B-Series Exhaust Manifold End Caps

Gasket for End Plates Fits end plates on Osco "B" series Manifolds: Osco #s CV818-350xBE, CV818-350xRB, CW818xBE, CW818xRB, CW818-396xBE,...

$9.00
Spacer, 4", for Mercruiser OSCCRR

OSCCRR-14S


Spacer, 4", for Mercruiser OSCCRR

4" Spacer. It uses Mounting Kit OSCCRR-MK or OSCCRR-MK-FW (fresh water closed cooling). Risers will need their own mounting kits.

$89.00
Gasket, Exhaust Riser, for Mercruiser (OSCCRR series)

OSCCRR-G


Gasket, Exhaust Riser, for Mercruiser (OSCCRR series)

Gasket, riser and spacer to manifold. Allows cooling water to pass from manifold to riser or spacer Included in Osco # CRR-MK Mounting Kit. Fits Osco...

$7.00
Gasket, Riser, for Center Riser V8 Block Off, FWC

OSCCRR-G-FW


Gasket, Riser, for Center Riser V8 Block Off, FWC

Gasket, riser to manifold. Blocks cooling water from passing from manifold to riser or spacer. Fits Osco # CRR-1, and Osco # CRR-3 Risers. See...

$7.00
Mounting Kit, Riser for Mercruiser (OSCCRR-1)

OSCCRR-MK


Mounting Kit, Riser for Mercruiser (OSCCRR-1)

Mounting Kit fits Osco # CRR-1 risers

$7.95
... more info
 Limited Availability - Please Call 
Riser Mounting Kit for Mercruiser OSCCRR-1, OSCCRR-3

OSCCRR-MK-FW


Riser Mounting Kit for Mercruiser OSCCRR-1, OSCCRR-3

Riser/Spacer Mounting Kit. It fits Osco # CRR-1 and Osco # CRR-3 risers and

$6.95
... more info
Replacement Available
Gasket, Manifold for GM 305 5.0L, 350 5.7L V8

OSCCV-GH


Gasket, Manifold for GM 305 5.0L, 350 5.7L V8

Manifold Gasket for GM 5.0/5.7L 305/350 cid BARCHV47-0000 CHV47-0000

$9.95
Mounting Kit, Manifold for OSCCVCR818 Manifolds

OSCCVCR-MK


Mounting Kit, Manifold for OSCCVCR818 Manifolds

Mounting Kit fits Osco # CVCR818 manifolds Replaces: Mallory # 9-40771

$12.95
Gasket Exhaust Manifold for GM 454 7.4L, 502 8.2L V8 Big Block

OSCCW-GH


Gasket Exhaust Manifold for GM 454 7.4L, 502 8.2L V8 Big Block

Manifold Gasket for GM 7.4/8.2L 454/502 CID REPLACES BARCHVA47-0000 CHVA47-0000

$9.95
Mounting Kit, Manifold , for Barr Style GM 454 7.4L, 502 8.2L V8

OSCCW994-MK


Mounting Kit, Manifold , for Barr Style GM 454 7.4L, 502 8.2L V8

Manifold Mounting Kit for Osco # CW994 Manifolds Big Block GM V8 with Barr Style Manifolds

$12.95
Mounting Kit, for OSCCWCR818 Exhaust Manifolds

OSCCWCR-MK


Mounting Kit, for OSCCWCR818 Exhaust Manifolds

Manifold Mounting Kit. Fits CWCR818 manifold. Includes CW-GH gasket and mounting hardware.

$12.95
Gasket, Manifold for GM 153 2.5L 4 Cyl

OSCCY4-GH


Gasket, Manifold for GM 153 2.5L 4 Cyl

Manifold Gasket for GM 2.5L 153 cid Replaces: Mercury Quicksilver # 27-52546; Barr # MC47-27-52546; GLM # 31550; Sierra # 18-2896; Mallory # 9-61426

$11.95
Gasket, Manifold for GM Inline 6 Cyl

OSCCY6-GH


Gasket, Manifold for GM Inline 6 Cyl

Manifold Gasket for GM Inline 6 Cyl. formerly OSCMO6-GH

$14.95
Fitting, for Manifold Hose, 3⁄4" NPT X 3⁄4" Hose Barb 90 Degree

OSCF66C9


Fitting, for Manifold Hose, 3⁄4" NPT X 3⁄4" Hose Barb 90 Degree

90° brass elbow fitting has 3/4" NPT on one end and 3/4" Hose Barb on the other.

$19.95
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