OMC 4 CYL EXHAUST MANIFOLD
Exhaust manifold for OMC 4 cylinder GM153 - 2.5 litre and GM181 - 3 litre engines before 1990.

Exhaust manifold for OMC 4 cylinder GM153 - 2.5 litre and GM181 - 3 litre engines before 1990.
Closed plate at the end of OMC 4-cylinder manifold, types 120CV - 2.5 liters and 140CV - 3 liters before 1990.
Starboard plate for old generation OMC round exhaust manifold type V6 or V8.
Port plate for old generation OMC round exhaust manifold type V6 or V8.
Port exhaust manifold for Mercruiser V8 engine based on GM small block before 1980.
Mounting hardware included.
Engine types:
- 225
- 250
- 255
- 270
- 280
Exhaust manifold for Mercruiser 4-cylinder engines of the 120hp 2.5L or 140hp 3L types with a Rochester carburetor whose center distances are: 82.52 x 47.2 mm.
Exhaust manifold now has an integrated water passage and not an external one as on the previous assembly (water hose at the end).
Replacement with this manifold necessarily involves replacement with the exhaust elbow which also has the internal water passage in reference P1229 and its seal 128370-13231.
Exhaust manifold for Yanmar 3JH and 4JH engine.
Stainless steel exhaust manifold for Yanmar YM series engine.
Material to be used in addition to the YM123000 - YM123000I elbow.
Spacer kit for replacing Mercruiser diesel manifolds part number 8M0084547 being discontinued.
This modification involves replacing the collector as well.
Screw kits included.
Remember to add the following reassembly seals:
27-879172204
27-854117
One-piece starboard exhaust manifold for Indmar 6 litre engine.
Mounting for engine not having an elbow at the end of the manifold.
Exhaust manifold gasket kit for Ford BB type 460 engine.
Full gasket without water tap for Chrysler manifold.
Exhaust gasket kit for Volvo Penta engines:
AQD21A
AQD21B
MD21A
MD21B
Port catalyzed elbow for PCM engine with an anode and not a blue bleed plug.
Starboard catalyzed elbow for PCM engine with an anode and not a blue bleed plug.
Starboard catalyzed elbow for PCM engine with an anode and not a blue bleed plug.
Port catalyzed elbow for PCM engine with an anode and not a blue bleed plug.
Exhaust elbow for Yanmar 6LY series engine.
Featuring a Ø 128mm exhaust outlet and a Ø 38mm water inlet.
Starboard exhaust elbow for 5.7 Indmar engine catalyzed after 2011.