Sierra 18-1975-1 Riser W/ Exhaust Tube Replaces 12076A2

Sierra 18-2833 Mercruiser Exhaust Elbow Gasket Sierra high-quality engine parts are designed to meet OEM specifications.  Fits MCM 120 (1993 & newer), 140/3.0L, 470, 165 in-line 6...

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...

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...

Sierra 18-1956-3 Mercruiser Exhaust Manifold Replacement manifold for Mercruiser Stern Drives. Features a 1 piece design. s/s from 18-1956-1, 18-1956-2 Supplied with mounting package Used...

Sierra Manifold (New Style)  Special Order est. 10 Days For use with Mercruiser I/O Fits most early Model 3.0 181 CID with Rochester Carb. 5 bolt pattern and 2.5 L, 153CID (1968-82) Use with:...

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...

Sierra 18-1966-1 Manifold Fits: MCM 3.0L/LX (1990 & newer); Marine Power Engine Model E181S Interchangeable with: Mercruiser Stern...

Sierra 18-2748 Mercruiser 4" Upper Exhaust Boot Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drive engines. Upper Tube: 4" Fits MCM 120,...

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...

Sierra 18-1971 Mercruiser Manifold Elbow Sierra replacement manifold elbow for most early model Mercruiser 140 hp (4 cyl) applications. This manifold elbow features a 3" outlet and 90 degree down...