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Mercruiser Exhaust Manifolds

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Parts Selection Guide

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      • Sierra 18-4226 Drain Plug Replaces 22-806608A02
        List Price: $4.49
        Starting At: $3.49

        Sierra 18-4226 Mercruiser Blue Plastic Drain Plug This Sierra 18-4226 drain plug is widely used for Mercruiser V4, V6 and V8 marine engines. Fits Mercruiser cylinder blocks and exhaust manifolds Comes complete with o-ring Interchangeable...

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      • Sierra 18-1976-2 Mercruiser Manifold Elbow
        List Price: $172.99
        Starting At: $121.49

        Sierra 18-1976-2 Mercruiser Manifold Elbow Fits most Mercruiser V6 and V8 applications, 7 degree (4" O.D. Riser). Unlike automotive engines, all marine inboards have exhaust risers that feature a water induction elbow. Located behind the engine’s...

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      • Sierra 18-1953-2 Exhaust Manifold
        List Price: $254.49
        Starting At: $177.99

        Sierra 18-1953-2 Mercruiser V8 Exhaust Manifold Sierra exhaust manifolds are designed as OEM replacements and meet or exceed manufacturer’s requirements. Sierra replacement manifolds are fully interchangeable with the OEM products they are...

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      • Sierra 18-2909 Exhaust Manifold Gasket Replaces 27-99757
        List Price: $8.99
        Starting At: $7.49

        Sierra 18-2909 Exhaust Manifold Gasket for Mercruiser, OMC, Volvo V-6 Sierra replacement engine parts are designed to meet OEM specifications.  GM V-6 Use with: 18-1932 Manifold 18-1952-1 Manifold Interchangeable...

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      • Sierra 18-1951-1 Exhaust Manifold Replaces 77235A2
        List Price: $470.49
        Starting At: $329.49

        Mercruiser Manifold - Starboard - with Mounting Package by Sierra Fits most Mercruiser GM Small Blocks with End Risers. Key Features: Starboard Side Supplied with Mounting Package           Use With: Exhaust Manifold...

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      • Sierra 18-1950-1 Exhaust Manifold Replaces 77234A2
        List Price: $470.49
        Starting At: $329.49

        Sierra 18-1950-1 Mercruiser Manifold - Port - with Mounting Package Fits most Mercruiser GM Small Blocks with End Risers. Supplied with mounting package Port Side Applications: GM 228 S/N 4765100-6218461 GM 250 S/N 4768860-4908849 GM 255 S/N...

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      • Mercury Mercruiser Stainless Steel Hose Clamp 54-815504272
        List Price: $5.49
        Starting At: $3.99

        Clamp, Mercury - Mercruiser 54-815504272 MERCURY / QUICKSILVER STAINLESS STEEL HOSE CLAMP-4 1/16" TO 5"

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      • Sierra 18-1971 Manifold Elbow Replaces 76351A04
        List Price: $203.99
        Starting At: $142.99

        Sierra 18-1971 Mercruiser Manifold Elbow Sierra replacement manifold elbow for most early model Mercruiser 140 hp (4 cyl) applications. Fits MCM 140 (1966-1982), 470 (1976-1977), 165 & 200 in-line 6 cyl. Fits MCM Ford V-8 engines & MCM GM...

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      • List Price: $319.49
        Starting At: $242.99

        Mercruiser Manifold - Port & Starboard by Sierra For Most Mercruiser Big Blocks with Center Risers. Fits Either Port or Starboard Sides. Replaces: Mercury 807078A-6,...

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      • Sierra 18-4263 Pipe Plug Replaces 22-32802
        List Price: $4.49
        Starting At: $3.49

        Sierra 18-4263 Pipe Plug 1/8"-27 NPT Sierra replacement pipe plug. Thread Size: 1/8" - 27 NPT Material:...

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      • Sierra 18-1998-1 Exhaust Manifold
        List Price: $292.49
        Starting At: $204.49

        Exhaust Manifold - Port & Starboard for Ford V8 Engines by Sierra Fits Port and Starboard Sides. Universal Center Riser Manifold. Use With: Exhaust Manifold Gasket: 18-0183 Exhaust Manifold Gasket Set: 18-0603 Exhaust Manifold Mounting Kit: 18-8538...

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      • Sierra 18-0680 Exhaust Manifold Gasket Replaces 27-815528
        List Price: $15.49
        Starting At: $11.99

        Sierra 18-0680 Exhaust Manifold Gasket Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Fits MCM 3.0L (1998 & Newer) & MCM 3.0LX (1990-1997) Interchangeable...

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      • Sierra 18-1997-1 Exhaust Manifold
        List Price: $281.49
        Starting At: $196.99

        Universal Exhaust Manifold with Mounting Package by Sierra For Port & Starboard Sides. Universal Center Riser Manifold. Fits: Chriscraft 283, 302, 307, and 350 CID Engines. Crusader 283 and 327 CID Engines thru 1964; 305, 307 and 350 CID Engines 1965...

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      • Sierra 18-1908 Manifold Riser Spacer Replaces 93320A13
        List Price: $151.99
        Starting At: $106.49

        Sierra 18-1908 Mercruiser Manifold Riser Spacer Mercruiser GM V6 229 and 262cu.in. (Models: 185 and 205) GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260 and 898) GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L) Use With: Manifold:...

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      • Sierra 18-0418 Exhaust Manifold Mounting Gasket Replaces 27-46820
        List Price: $15.99
        Starting At: $10.99

        Sierra 18-0418 Exhaust Manifold Mounting Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Fits MCM/MIE GM V-8 (454, 482, 496, 502 & 504 cid) engines. Interchangeable...

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      • Sierra 18-1999 Manifold Elbow
        List Price: $186.49
        Starting At: $130.49

        Sierra 18-1999 Exhaust Elbow Sierra cast iron replacement exhaust elbow; fits 3" I.D. exhaust hose. Replaces: Barr 200082,20-0082 Mallory 9-40810 GLM 56110 Osco 992,CRR-1 Use with...

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      • Sierra 18-4009 Manifold End Plate Replaces 60252A2
        List Price: $85.99
        Starting At: $59.99

        Sierra 18-4009 Manifold End Plate for Mercruiser & OMC Sterndrives Sierra high-quality engine parts are designed to meet OEM specifications. For Use With: 18-1950-1 Manifold 18-1951-1 Manifold 18-1958-1 Manifold 18-1960-1 Manifold 18-1962-1...

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      MerCruiser Exhaust Manifold

      Corrosion is the enemy of many boat engine parts. Even those that are sealed, such as an exhaust manifold, are not protected from damage by outside elements. As part of any sound maintenance program, Wholesale Marine recommends that you have this vital engine part inspected and, when worn, replaced to avoid costly engine repairs or even a rebuild.

      Need to Replace Your MerCruiser Exhaust Manifold? Let Us Help!

      MerCruiser exhaust manifolds are among the most reliable on the market. Models that have manifolds that are cooled by the engine’s fresh water/antifreeze coolant mixture will last indefinitely, but still require routine maintenance. Should your MerCruiser Exhaust Manifold require replacement, know that we are your source for every part the task requires. From MerCruiser OEM Exhaust Elbows to Sierra Exhaust Boots to an entire MerCruiser OEM Exhaust Manifold, hardware, hose barbs, risers, drain taps, and gaskets, Wholesale Marine even carries the hardware and tools to ensure you’ll get the job done right.

      Shop Wholesale Marine for Mercruiser 4, 6 and 8 cylinder exhaust manifolds and risers. We carry both OEM and Sierra brand for the best selection, lowest price, and fastest shipping on the web! Give us a call or try our user friendly Parts Finder for help locating the correct parts for your motor. If you have questions, we invite you to contact us. We’re boating enthusiasts too, and welcome your call. Or, if you wish to order, please call us Monday through Friday from 9:00 AM until 6:00 PM EST at (877) 388-2628. Don’t forget to sign up for our Captain’s Club Rewards Program to save even more the next time you shop at Wholesale Marine.