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Table of Contents
Osco Marine Manifolds

Since 1932
OSCO Motors Co. has been in the business of providing boaters with a high quality, reasonable cost alternative to original manufacturer's equipment.
All manifolds come with a 3 year warranty and DO NOT include gaskets unless otherwise noted. Order gaskets and bolts separately. We stock all OSCO manifolds and ship the same day.
Click on Pictures or Links Below to get more Info

Mercruiser
 

GM Four Cylinder 153 cu.in. Early Models 110/120 -Carb Mounts Inline With Manifold
 
GM Four Cylinder 153 cu.in. Early Models 110/120-Carb Mounts across Manifold
GM Four Cylinder 181 cu.in. Models 120/ 140/ 2.5L/ 3.0L
 
 
Head Conversion  For Large intake port 181 cu.in.
 
Four Cylinder 224 cu.in. 3.7 Liter-Models 165,170,180, & 190
GM In-Line Six Cylinder 250 cu.in-Model 160
GM In-Line Six Cylinder 250 cu.in. Model 165
GM In-Line Six Cylinder 250 and 292 cu.in-Models165 & 200
GM V6 229 and 262 cu.in-Models 185 &205.
Ford Small Block V8 302 - 351 cu.in-Models 215, 225, 233, 255, & 888.
GM Small Block V8 305 - 350 cu.in. Models 198, 228 and 898
GM Small Block V8 305 - 350 cu.in. Models 200, 228, 230, 260 & 898
GM Big Block V8 454 cu.in-Models 330, 340, & 7.4L.
Thermostat components for GM V8 eng w/log Style manifolds
Crusader  
GM Small Block V8 305 - 350 cu.in-Models 220 & 270.
GM Small Block V8 305 - 350 cu.in-Models CM305, CM350XL, & CM350HT.
GM Big Block V8 454 cu.in-Models 454XL, & 502XL.
GM Big Block V8 454 cu.in-Models CH350 & 454XL Log Style.
Crusader Oil Coolers

Chrysler  
Small Block V8 318 - 360 cu.in-1966 & UP Log Style Swivel Exh
Small Block V8 318 - 360 cu.in-1966 & UP Log Style Fixed Exh.
Big Block V8 383 - 440 cu.in-Except 413E.
318 - 440 Water Tube Installation  
Barr Replacement Manifolds  
Ford Small Block V8 302 - 351 cu.in-Barr Style FM-1-83.
GM Small Block V8 305 - 350 cu.in-Barr Style CHV-1-83.
GM Big Block V8 454 cu.in-Barr Style-CHVA-1-84.
Indmar  
Ford Small Block V8 302 - 351 cu.in-53-2008.
GM Small Block V8 305 - 350 cu.in-.
Marine Power  
GM Small Block V8 305 - 350 cu.in-0994-000.
GM Big Block V8 454 cu.in-0991-110.
Pleasurecraft  
Ford Small Block V8 302 and 351 cu.in-RO28001.
 
Volvo  
Volvo Four Cylinder B20 & 2.3 and 2.5 Liter-855387-7 & 834438-4
GM Small Block V8 305 - 350 cu.in-Models AQ & BB.200,205,211,231,225,260,271,290,311                      500,501,570, & 572
Omc  
GM In-Line Six Cylinder 250 cu.in-Model 160.
Risers used on multiple applications Ford & GM

GM Small Block V8 305 - 350 cu.in. 1979 to 1989-Log Style
GM Small Block V8 305 - 350 cu.in-Center Riser.

Chris Craft
 
GM Small Block V8 283 - 350 cu.in.
Osco  
GM V6, 3.8 Liter 229 cu.in.
Ford Small Block V8 221, 255, 260, 289, 302 and 351 cu.in.
GM Small Block V8 265, 283, 305, 307, 327, 350 and 400 cu.in.
GM Big Block V8 396, 427 and 454 cu.in.
Cast Iron Elbow and Hose Adapter Kits
Spacers, Brackets and accessories
 
     


Conversion Parts
--Conversion Manifolds, Risers and Elbows
--Conversion Manifolds: "A" Style-Buick, Chrysler & Ford
--Conversion Manifolds: "B" Style-Chev SB & BB
--Conversion Manifolds: "B" Style-Chrysler Slant 6 & Pre 1965 301,318,325,326
--Conversion Manifolds: "B" Style-Ford 351C, 400, 426, 460, & Oldsmobile
--Conversion Manifolds: Diesel Engines-Ford 4cyl 220,242,254 & 254 Dover GM 6.2 & 6.5
--Risers: 1800 Series-Swivel Exh
--Risers: 1800 Series-Clamp Style
--Elbows: 1800 Series-Clamp Style
--Elbows: 18000 Series-Pipe Thread
--Thermostat Housing Assembly. Raw Water, Dual Pump-GM In-line & V-8, Ford SB BB, Olds
 




Gaskets
--Gaskets
--Gaskets
--Gaskets

Cross Reference
--Aqua Power to OSCO
--Barr to OSCO
--Boat U.S. - Boat America to OSCO
--Boat U.S. - Boat America to OSCO
--Chris Craft to OSCO
--Chrysler to OSCO
--Crusader to OSCO
--Indmar to OSCO
--Marine Power to OSCO
--Mercruiser to OSCO
--OMC to OSCO
--Pleasurecraft to OSCO
--Sierra to OSCO
--Volvo to OSCO

Tech Tips
--Tech Tips
--Tech Tips
--Tech Tips
--OSCO Center Riser Plumbing Tips
--Tech Tips
--Tech Tips

 


Remember we stock parts and accessories for all makes and models of marine engines and boats. These catalog pages represent just a few of the parts we stock. Use the search field on the top to search by part the Part Number with the abbreviation at the bottom of each page. If you do not find what you are looking for please fill out the info form and we will find the parts you need and respond with a quote.

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