Manifold Exhaust Kit for Mercruiser GM 5.0L 305 5.7L 350 4 Inch 1987-2003 58232

  • Part #: GLMSB4MER


  • Please Choose:

    I have Fresh Water Cooling with Anti-Freeze in my Manifolds


    I require the following spacers: (choose one)


The GLM 58232 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.

4 Inch means the exhaust hose size that fits the riser is 4 inch inside diameter.

2 GLM51140 Risers
2 GLM51230 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

GLM 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

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