Mercruiser marine exhaust manifolds

We carry all gaskets in stock. 3-year warranty on all Osco & Barr manifolds & risers. Click the Mercruiser manifold images to enlarge. We ship worldwide and will try to match anyone's price on the same product. Open Monday through Friday from 9am - 5pm Eastern Time. Please Email us if it is after hours.
Click to enlarge Part # Specs Price
"Dry Joint" Direct Replacement Exhaust Manifold for Mercruiser V8 - 5.0L, 5.7L, and 6.2L, Replaces Mercruiser part number 865735A02. For engines after 2002. 865735 "Dry Joint" Direct Replacement Exhaust Manifold for Mercruiser V8 - 5.0L, 5.7L, and 6.2L, Replaces Mercruiser part number 865735A02. For engines after 2002. 389.00
Dry joint center rise manifold for V6 Mercruiser. Comes with hardware and gaskets. 864612 Dry joint center rise manifold for V6 Mercruiser. Comes with hardware and gaskets. 359.00
"Dry Joint" Riser for V-8 and V-6 Mercruiser engines after 2002. Replaces Mercruiser part #864591T02. 864591 "Dry Joint" Riser for V-8 and V-6 Mercruiser engines after 2002. Replaces Mercruiser part #864591T02. 349.00
Exhaust manifold. Fits 229 and 262 cu. in. (4.3) engines. V-6. Exact replacement for Mercruiser #'s 99745 and 99746. Fits both sides of engine. Three yr. warranty. 9745 Exhaust manifold. Fits 229 and 262 cu. in. (4.3) engines. V-6. Exact replacement for Mercruiser #'s 99745 and 99746. Fits both sides of engine. Three yr. warranty. 379.00
Exhaust riser. 4" exhaust outlet. For late model inboard/outboard and inboards. Exact replacement for Mercruiser #44354, 807914 and 807988. This riser is also available in aluminum. Please call for pricing. 4354 Exhaust riser. 4" exhaust outlet. For late model inboard/outboard and inboards. Exact replacement for Mercruiser #44354, 807914 and 807988. This riser is also available in aluminum. Please call for pricing. 179.00
Exhaust riser. 3" exhaust outlet. For early model inboard/outboard models. Exact replacement for Mercruiser #s 98503 & 98504. 8503-A Exhaust riser. 3" exhaust outlet. For early model inboard/outboard models. Exact replacement for Mercruiser #s 98503 & 98504. 169.00
Exhaust riser. 3" exhaust outlet. 0 degree riser for some early model straight inboards. Exact replacement for Mercruiser #98502 8502 Exhaust riser. 3" exhaust outlet. 0 degree riser for some early model straight inboards. Exact replacement for Mercruiser #98502 199.00
Gasket, restrictor. Fits center riser Mercruiser. Common use is on all raw water cooled engines. Replaces Mercruiser #27-41813. 8503-GR Gasket, restrictor. Fits center riser Mercruiser. Common use is on all raw water cooled engines. Replaces Mercruiser #27-41813. 6.00
Gasket, manifold to cylinder head. Replaces Mercruiser #27-99757. CS-GH Gasket, manifold to cylinder head. Replaces Mercruiser #27-99757. 7.50
A pair of 3 inch tall spacer blocks for V6 and V8 Mercruiser center rise applications. Comes with 2 blocks and hardware and gaskets. MC-20-93320A3 A pair of 3 inch tall spacer blocks for V6 and V8 Mercruiser center rise applications. Comes with 2 blocks and hardware and gaskets. 219.00
A pair of 6 inch tall spacer blocks for V6 and V8 Mercruiser center rise applications. Comes with 2 blocks and hardware and gaskets. MC-20-93322A3 A pair of 6 inch tall spacer blocks for V6 and V8 Mercruiser center rise applications. Comes with 2 blocks and hardware and gaskets. 219.00
Small Block V-8. Exhaust manifold. Fits 305-350 cu.in. (5.0-5.7) GM small block engines. Fits both sides of engine. Replaces Mercruiser #s 87114 and 860246. Up dated to replace all small block Mercruiser center riser manifolds. Exact replacement for Mercruiser. Three year warranty. 7114B2 Small Block V-8. Exhaust manifold. Fits 305-350 cu.in. (5.0-5.7) GM small block engines. Fits both sides of engine. Replaces Mercruiser #s 87114 and 860246. Up dated to replace all small block Mercruiser center riser manifolds. Exact replacement for Mercruiser. Three year warranty. 219.00
V-8 GM Block. Exhaust manifold. Fits 454/502 cu.in. GM Big Block engines. Fits both sides of engine. Exact replacement for Mercruiser #89011. Three year warranty. This manifold is also available in aluminum. 9011A V-8 GM Block. Exhaust manifold. Fits 454/502 cu.in. GM Big Block engines. Fits both sides of engine. Exact replacement for Mercruiser #89011. Three year warranty. This manifold is also available in aluminum. 339.00
Exhaust riser. 4" exhaust outlet. For late model inboard/outboard and inboards. Exact replacement for Mercruiser #44354, 807914 and 807988. This riser is also available in aluminum. 4354 Exhaust riser. 4" exhaust outlet. For late model inboard/outboard and inboards. Exact replacement for Mercruiser #44354, 807914 and 807988. This riser is also available in aluminum. 179.00
Exhaust riser, 3" exhaust outlet. For early model inboard/outboard models. Exact replacement for Mercruiser #s 98503 & 98504. 8503-A Exhaust riser, 3" exhaust outlet. For early model inboard/outboard models. Exact replacement for Mercruiser #s 98503 & 98504. 169.00
Exhaust riser, 3" exhaust outlet. 0 degree riser for some early model straight inboards. Exact replacement for Mercruiser #98502. 8502 Exhaust riser, 3" exhaust outlet. 0 degree riser for some early model straight inboards. Exact replacement for Mercruiser #98502. 199.00
Gasket, restrictor, Fits center riser Mercruiser. Common use is on all raw water cooled engines. Replaces Mercruiser #27 41813. 8503-GR Gasket, restrictor, Fits center riser Mercruiser. Common use is on all raw water cooled engines. Replaces Mercruiser #27 41813. 6.00
Gasket manifold to cylinder head. Replaces Mercruiser #27-46820. CW-GH Gasket manifold to cylinder head. Replaces Mercruiser #27-46820. 11.50
Gasket manifold to cylinder head. Replaces Mercruiser #27-33395. CV-GH Gasket manifold to cylinder head. Replaces Mercruiser #27-33395. 7.50