Quick view Add to Cart Sierra 18-4218 Drain Tap Replaces 22-16951Q1 $12.99 $9.99 Sierra 18-4218 Drain Tap for Mercruiser, Volvo, OMC Sierra high-quality engine parts are designed to meet OEM specifications. Used with most OEM Manifolds. Fits Mercruiser cylinder blocks & exhaust manifolds Material: Brass Size: 1/4"... Add to Cart
Quick view Add to Cart Sierra 18-4456 Exhaust Protector Valve Replaces 34765A2 $38.99 $26.99 Sierra 18-4456 Universal 3" Exhaust Flapper Includes 3" stainless steel clamp. Features: Compounded rubber flapper valves stops water from entering the exhaust system Constructed with weather resistant EPDM with U/V... Add to Cart
Quick view Add to Cart Sierra 18-5961 Freeze Plug $6.49 $4.99 Sierra 18-5961 Freeze Plug Sierra high-quality freeze plug constructed of Bronze. Size: 1-5/8" Superseded to 18-5961-9 Add to Cart
Quick view Out of stock Sierra 18-1998-1 Exhaust Manifold $403.99 $282.99 Sierra 18-1998-1 Exhaust Manifold - Port & Starboard for Ford V8 Engines Fits Port and Starboard Sides. Universal Center Riser Manifold. Fits: Crusader 302 and 351 CID Engines Interceptor 221, 260 and 289 CID Engines Commander, Mercury, OMC,... Add to Cart
Quick view Out of stock Sierra 18-2949 Exhaust Manifold Gasket Replaces 856034 $15.49 $10.99 Sierra 18-2949 Exhaust Manifold Gasket Superseded to 18-2949-9 Sierra replacement engine parts are designed to meet OEM specifications. Fits MCM/MIE GM V-8 (283, 305, 350 & 377 cid) engines. S/S from 18-0872 Interchangeable... Add to Cart
Quick view Add to Cart Sierra 18-0604 Exhaust Manifold Gasket Set $37.99 $26.99 Barr Exhaust Manifold Gasket Set by Sierra For GM 305/350 CID Engines and Barr Exhaust Systems. Use with Manifold 18-1997-1. Add to Cart
Quick view Add to Cart Sierra 18-0603 Exhaust Manifold Gasket Set $40.49 $28.49 Sierra 18-0603 Exhaust Manifold Gasket Set for Mercruiser, Volvo, OMC Sierra high-quality engine parts are designed to meet OEM specifications. For Ford 302/351 CID Engines and Indmar Inboard V8 Engines. Use with 18-1998-1 Manifold Set... Add to Cart
Quick view Add to Cart Sierra 18-1997-1 Universal Center Riser Exhaust Manifold $381.49 $266.99 Sierra 18-1997-1 Universal Center Riser Exhaust Manifold This Sierra is a universal exhaust manifold for engines with center risers. Constructed from cast iron for maximum durability, this manifold can be used on either the port or starboard side... Add to Cart
Quick view Out of stock Sierra 18-4458 Exhaust Protector Valve Replaces 700-834800A5 $72.49 $50.99 Sierra 18-4458 Universal 5" Exhaust Protector Valve Sierra high-quality engine parts are designed to meet OEM specifications. Fits both 5" & 6" Exhaust and includes stainless steel clamp. Compounded rubber flapper valves prevent water from... Add to Cart
Quick view Add to Cart Sierra 18-4457 Exhaust Protector Valve Replaces 12644A1 $36.99 $25.99 Sierra 18-4457 Mercruiser Exhaust Protector Valve - Replaces 12644A1 The Sierra 18-4457 Exhaust protector valve is a compounded rubber flapper valve that prevents water from entering the exhaust system. This valve is made with weather-resistant EPDM... Add to Cart
Quick view Add to Cart Sierra 18-4364 Exhaust Elbow Mounting Package $18.99 $13.49 Sierra 18-4364 Exhaust Elbow Mounting Package - Open Sierra high-quality engine parts are designed to meet OEM specifications. Use with: 18-1907 Riser 18-1939 Riser 18-1999 Elbow 18-1971 Elbow Mounting Package Includes: (1) 18-2854-1... Add to Cart
Quick view Out of stock Sierra 18-5962 Freeze Plug $20.49 $13.99 Sierra 18-5962 Freeze Plug Sierra high-quality bronze freeze plug. Size: 1-3/4" Add to Cart
Quick view Out of stock Sierra 18-2854-1 Exhaust Manifold Elbow Gasket $7.49 $5.99 Sierra 18-2854-1 Exhaust Manifold Elbow Gasket Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Interchangeable with: Barr 01-0107 GLM 36830 Mallory 9-65501 Osco 992-G s/s... Add to Cart
Quick view Out of stock Sierra 18-1898 Manifold $431.99 $302.49 Sierra 18-1898 Exhaust Manifold for 454 GM big block V8 For use with Chris-Craft inboard, Chrysler Inboard, Crusader Inboard, Universal Inboard Cooling Systems, Mercruiser I/O, Volvo Penta, & OMC Sterndrive/Cobra Engines. Material: Cast... Add to Cart
Quick view Out of stock Sierra 18-1939 Riser $274.49 $191.99 Sierra 18-1939 Riser Sierra replacement engine parts are designed to meet OEM specifications. Use with 3-1/2" I.D. exhaust hose. Material: Cast iron Ford Small Block V8 302-351 cu. in. GM Small Block V8 305-350 cu. in. GM Big Block V8 454 cu... Add to Cart
Quick view Add to Cart Sierra 18-8535 Exhaust Manifold Elbow Mounting Kit $16.99 $11.99 Sierra 18-8535 Exhaust Manifold Elbow Mounting Kit Sierra replacement exhaust manifold elbow mounting kit (blocked). Barr, Indmar & Marine Power Ford Small Block V8 302-351 cu. in. GM Big Block V8 454 cu. in. GM Small Block V8 305-350 cu. in... Add to Cart
Quick view Add to Cart Sierra 18-1949 Manifold Spacer $183.99 $108.49 Sierra 18-1949 Manifold Spacer Sierra high-quality engine parts are designed to meet OEM specifications. Size: 3" For Ford small block V8 302-351 cu. in. For GM Big Block V8 454 cu. in. For GM Small Block 305-350 cu. in. Use... Add to Cart
Quick view Out of stock Sierra 18-8538 Exhaust Manifold Mounting Kit $30.99 $21.99 Sierra 18-8538 Exhaust Manifold Mounting Kit Ford Small Block V-8 Barr and Indmar Ford Small Block V8 302-351cu.in. Use With: 18-1904 Manifold 18-1998-1 Manifold 18-1907 Riser Kit Includes: (1) 18-0183-1... Add to Cart
Quick view Out of stock Sierra 18-0470 Exhaust Elbow Gasket $12.49 $8.99 Exhaust Elbow Gasket - Special Order est. 10 Days Add to Cart
Quick view Out of stock Sierra 18-5962-9 Freeze Plug (Priced Per Pkg Of 8) $156.49 $109.49 Sierra 18-5962-9 Freeze Plug (Priced Per Pkg Of 8) Material: Bronze Size: 1-3/4" Interchangeable with: Mercruiser Stern Drive 19-37478 Add to Cart
