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Exhaust Manifolds & Risers

Exhaust Manifold Assembly 120 140

Exhaust manifold assembly for Mercruiser 4-Cyl. 120 & 140 HP. 1982 - 1995. OE 806867A8.
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Our Price: $219.92

Exhaust Manifold Assembly 140

Exhaust manifold assembly for Mercruiser 140, inline 4 Cyl. 1968 - 1982. OE 96705A1.
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Our Price: $257.93

Exhaust Manifold Assembly 3.0L 3.0LX

Exhaust manifold assembly for Mercruiser 3.0L and 3.0LX engines. 1990 & UP. OE 806867A12.
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Our Price: $257.93

Exhaust Manifold Mercruiser 4.3 Litre

Marine Exhaust Manifold for Mercruiser V6 Engines.
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Our Price: $173.63

GLM Exhaust Manifold GM V6

GLM Exhaust Manifold GM V6 for Mercruiser 175 - 205 Modles. 1983 - Present. Replaces OE 99746A17.
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Our Price: $173.63

V6 Exhaust Manifold Conversion Kit 4.3L

GLM's Manifold Conversion Kit is designed to convert all Single Piece Exhaust Manifolds to the Center Rise Man
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Our Price: $1,203.17

Exhaust Manifold (Merc. Port V8)

Marine Exhaust Manifold, Port Side. Fits most Mercruiser GM Small Blocks with End Riser.
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Our Price: $274.40

Exhaust Manifold (Merc. Stbd. V8)

Starboard Side Marine Exhaust Manifold fits Most Mercruiser Small Block V8's with End Riser.
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Our Price: $274.40

Exhaust Manifold (V8 )

Universal Center Riser Manifold for use with small block V8 marine engines.
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Our Price: $168.30

Exhaust Manifold Mercruiser V8

Marine Exhaust Manifold For Most Mercruiser Small Block V8 Engines
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Our Price: $134.54

GLM Exhaust Manifold GM V8 Small Block

Exhaust Manifold GM small block V8. Fits Mercruiser 1983 to present. 305, 350, and 377 models.
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Our Price: $149.59

Exhaust Manifold Small Block V8 Aluminum

Aluminum exhaust manifold for Mercruiser small block GM V8. 305 & 350. Black. Must use with Aluminum elbows.
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Our Price: $200.24

Hardware Kit for Aluminum Exhaust

Hardware kit for aluminum exhaust. Made of stainless steel. Comes with gaskets, washers and bolts.
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Our Price: $36.29

V8 Exhaust Manifold Conversion Kit

GLM's Manifold Conversion kit is designed to convert all log style exhaust manifolds to the more effecient cen
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Our Price: $1,152.56

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Exhaust Manifolds & Risers Top Sellers . . .

Mercruiser Blue Plastic Drain Plug

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Exhaust Manifold Mercruiser V8

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Manifolds

Exhaust manifolds play a crucial role in the performance of your engine. The easier the exhaust gases can escape from the engine, the less back pressure is created causing the engine to run better. They also play a part in cooling your engine. The cooling water from the engine is run through the manifold in a separate camber between the inner and outer casting. This is to keep the manifold from generating too much heat. If the engine compartment gets too hot, the engine will run poorly. Also a manifold that is too hot could cause a fire. During winterization the manifold must be drained. If not, the water inside will freeze and crack the manifold causing it to leak water externally and/or internally.