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We supply NEW parts and specialize in locating obsolete, no-longer-available and back ordered parts. Browse our site to see just a few of the many parts we supply.  Call us or fill out the info form to receive a quote or to request information on parts not listed online.

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   Mercruiser Manifold Starboard Logstyle 7235 198-228 & 898 Models (Osco)
MANIFOLD
Description: Manifold, starboard. Log style manifold fits 305 and 350 cu.in. GM small block V8 engines Replaces Mercruiser # 77235B. Use mounting kit 7214-MK.
Base SKU: OSC7235B
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   Mercruiser Manifold. Osco GM V6 engines. Replaces Mercruiser #’s 99745 and 99746. (Osco)
Manifold. Fits 229 and 262 cu.in. GM V6 engines. Replaces Mercruiser #’s 99745 and 99746.Fits both sides of engine.
Description: Manifold. Fits 229 and 262 cu.in. GM V6 engines. Replaces Mercruiser #’s 99745 and 99746.Fits both sides of engine. Use mounting kit 9745-MK.For more info See the Osco Manifold Page click here
Base SKU: OSC9745
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   Mercruiser Osco RISER 4", 7º down angle. (Osco)
Osco RISER4
Description: Riser, 4" exhaust outlet, 7º down angle. For late model inboard/outboard and inboards (except dry joint exhaust.) Replaces Mercruiser # 44354, 807914 and 807988. Use mounting kit 4354-MK.
Base SKU: OSC4354
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   Osco RISER 3" MERCRUISER #98503 (Osco)
Osco RISER MERCRUISER #98503
Description: Riser, 3" exhaust outlet, 15º down angle. For early model inboard/outboards. Replaces Mercruiser #’s 98503 and 98504. Use mounting kit 8503A-MK.
Base SKU: OSC8503A
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   Mercruiser 3" SPACER OEM #MC93320A3 (Osco)
Mercruiser 3
Description: Spacer, 3" center riser. Fits 9745, 7114B2 manifold. Replaces Mercruiser # 93320. Sold each. Use mounting kit 3320-MK with 8503A riser or use 3320-MK-X with 4354 riser.
Base SKU: OSC3320
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   OSCO MERCRUISER 6" SPACER OEM #MC93322A3 (Osco)
OSCO MERCRUISER 6
Description: Spacer, 6" center riser. Fits 9745 manifold. Replaces Mercruiser # 93322. Sold each. Use mounting kit 3322-MK to mount spacer to manifold. Riser #’s 8503A or 4354 will require their own mounting kit.
Base SKU: OSC3322
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   Manifold mounting Kit V-6 99745/99746 (Osco)
MOUNTING KIT
Description: Mounting Kit, manifold. Fits 9745 manifold. Includes CS-GH gasket and mounting hardware.For more info See the Osco Manifold Page click here to return to Osco 9745
Base SKU: OSC9745-MK
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   Mounting Kit, riser. Fits 4354 Mercruiser riser (Osco)
Mounting Kit, riser. Fits 4354 Mercruiser riser
Description: Mounting Kit, riser. Fits 4354 riser. Includes 8503-GR gasket and mounting hardware.
Base SKU: OSC4354-MK
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   Mounting Kit, riser. Fits 8503A riser. (Osco)
Mounting Kit, riser. Fits 8503A riser. Includes 8503-GR gasket and mounting hardware.
Description: Mounting Kit, riser. Fits 8503A riser. Includes 8503-GR gasket and mounting hardware.
Base SKU: OSC8503A-MK
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   MOUNTING KIT MERCRUISER spacer. Fits 3322 (Osco)
MOUNTING KIT MERCRUISER spacer. Fits 3322
Description: Mounting Kit, spacer. Fits 3322 Spacer. Includes 8503-GO and 8503-GR gaskets and mounting hardware to bolt spacer to manifold. Riser #’s 8503A or 4354 will require their own mounting kit.
Base SKU: OSC3322-MK
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   MOUNTING KIT FOR 3320 SPACER TO 4354 RISER (Osco)
MOUNTING KIT FOR 3320 SPACER TO 4354 RISER
Description: Mounting Kit, spacer. Fits 3320 spacer with 4354 riser. Includes 8503-GO and 8503-GR gaskets and mounting hardware to bolt 4354 riser and 3320 spacer to 9745 manifold.
Base SKU: OSC3320-MK-X
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   MOUNTING KIT FOR 3320 SPACER (Osco)
MOUNTING KIT FOR 3320 SPACER
Description: Mounting Kit, spacer. Fits 3320 spacer with 8503A riser. Includes 8503-GO and 8503-GR gaskets and mounting hardware to bolt 8503A riser and 3320 spacer to 9745 manifold
Base SKU: OSC3320-MK
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   Gasket, blocked. 27-41811 (Osco)
Gasket, blocked. Fits center riser Mercruiser
Description: Gasket, blocked. Fits center riser Mercruiser. For fresh water/closed cooling, gasket separates anti-freeze and raw water (no stainless plate required). Replaces Mercruiser # 27-41811.
Base SKU: OSC8503-GB
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   Gasket, open. Fits center riser Mercruiser. (Osco)
Gasket, open. Fits center riser Mercruiser.
Description: Gasket, open. Fits center riser Mercruiser. Common use is at base of spacer block along with 8503-GR at riser. Allows spacer to fill with water. Replaces Mercruiser # 27-87105.
Base SKU: OSC8503-GO
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   Gasket, restrictor. Mercruiser # 27-41813. (Osco)
Gasket, restrictor. Fits center riser Mercruiser Replaces Mercruiser # 27-41813.
Description: Gasket, restrictor. Fits center riser Mercruiser. Common use is on all raw water cooled motors.Restricts flow, creating water back pressure to keep manifold and/or spacer full. Replaces Mercruiser # 27-41813.
Base SKU: OSC8503-GR
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   Gasket,GM V-6 manifold to cylinder head. Replaces Mercruiser # 27-99757. (Osco)
Gasket, manifold to cylinder head. Replaces Mercruiser # 27-99757.
Description: Gasket, manifold to cylinder head. Included in 9745-MK mounting kit. Replaces Mercruiser # 27-99757.
Base SKU: OSCCS-GH
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   FITTING 3/4"PIPE X1"THREAD 90D (Osco)
FITTING 3/4
Description: Water Fitting, 90º elbow. 3/4" MPT x 1" hose barb. Replaces Mercruiser # 22-36305. Fits Chrysler , Mercruiser Manifolds and Risers
Base SKU: OSCF68C9
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   WATER FITTING 3/4" STRAIGHT (Osco)
WATER FITTING 3/4
Description: Water Fitting, straight. 3/4" MPT x 1" hose barb. Replaces Mercruiser # 22-45084. Replaces Crusader # 97911 Fits Chrysler Mercruiser Crusader manifolds and risers
Base SKU: OSCF68CS
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