Boat Parts Worldwide
1-800-998-9508   Intl. +1-206-780-5670
+ =
Free Shipping for Online Orders $99 or More See Conditions

OMC Exhaust Manifolds

Shop By Catalog. Cross-Reference Charts, Application Guides, & More...
Shop Sierra's Catalog for OMC Marine Engine Parts Shop Barr's Catalog for Exhaust 

Systems & PartsShop Barr's Catalog for Exhaust Systems & Parts
Post a question or comment about OMC Exhaust Manifolds.
Products: 1 - 39 of 39
Conversion Manifold Kit for OMC Cobra Small Block Chevy (Replaces w/ Center Rise Style Manifolds)

Conversion Manifold Kit for OMC Cobra Small Block Chevy (Replaces w/ Center Rise Style Manifolds)

Mfr. Barr Marine by EDM | Mfr No. OMC-CMKIT-COBRA

Conversion Manifold Kit for OMC Cobra Small Block Chevy (Replaces w/ Center Rise Style Manifolds). Kit replaces original "Log Style" manifolds and risers. Designed to replace old manifolds...
$890.21


View Details
Choke Heat Source, 1-380446

Choke Heat Source, 1-380446

Mfr. Barr Marine by EDM | Mfr No. 1-380446

Choke Heat Source, 1-380446. For use with 981462 manifold. Fits O.M.C. 120 hp 2.5L Chevrolet engines...
$42.46


View Details
Choke Heat Source, OMC V6 & V8, 1-380985

Choke Heat Source, OMC V6 & V8, 1-380985

Mfr. Barr Marine by EDM | Mfr No. 1-380985

Choke Heat Source, OMC V6 & V8, 1-380985, Starboard side only. Fits OMC 155 hp V-6 Buick & OMC Small Block Chevy 283 / 305 / 307 / 350 w/ Round log style manifolds...
$74.55


View Details
Direct Replacement End Cap, OMC V6 & V8, 1-312148

Direct Replacement End Cap, OMC V6 & V8, 1-312148

Mfr. Barr Marine by EDM

Direct Replacement End Cap, OMC V6 & V8, 1-312148. Fits OMC 155 hp V-6 Buick, & OMC Small Block Chevy 283 / 305 / 307 / 350 w/ Round log style manifolds...
$60.00 - $63.64

View Details
Direct Replacement Exhaust Elbow to Hose Adapter, OMC-20-907765

Direct Replacement Exhaust Elbow to Hose Adapter, OMC-20-907765

Mfr. Barr Marine by EDM | Mfr No. OMC-20-907765

Direct Replacement Exhaust Elbow to Hose Adapter, OMC-20-907765. Fits O.M.C. 120 hp 2.5L Chevrolet engines...
$55.38


View Details
Direct Replacement Front End Cap, 1-910280

Direct Replacement Front End Cap, 1-910280

Mfr. Barr Marine by EDM | Mfr No. 1-910280

Direct Replacement Front End Cap, 1-910280. Replaces OMC # 910280. Fits O.M.C. 120 hp 2.5L Chevrolet engines...
$64.55


View Details
Direct Replacement High Rise to Adapter Elbow, OMC-20-909368

Direct Replacement High Rise to Adapter Elbow, OMC-20-909368

Mfr. Barr Marine by EDM | Mfr No. OMC-20-909368

Direct Replacement High Rise to Adapter Elbow, OMC-20-909368. For use with 980536 riser. Fits O.M.C. 120 hp 2.5L Chevrolet engines...
$79.09


View Details
Direct Replacement Log Style Exhaust Manifolds, OMC-1-912441 & OMC-1-912442

Direct Replacement Log Style Exhaust Manifolds, OMC-1-912441 & OMC-1-912442

Mfr. Barr Marine by EDM

Direct Replacement Log Style Exhaust Manifolds, OMC-1-912441 & OMC-1-912442. Replaces OMC # 912441 & 912442. Fits O.M.C. Small Block Chevrolet w/ Log style manifold...
$233.93 - $240.34

View Details
Direct Replacement OMC / Volvo Penta Exhaust Manifold, 1-914035

Direct Replacement OMC / Volvo Penta Exhaust Manifold, 1-914035

Mfr. Barr Marine by EDM | Mfr No. OMC-1-914035

Direct Replacement OMC / Volvo Penta Center Riser Exhaust Manifold, 1-914035. Replaces OMC # 914035 / Volvo # 3857723 (new style). For 5.7 Liter V8 Cobra...
$222.26


View Details
Direct Replacement OMC / Volvo V6 Center Riser Exhaust Manifold, OMC-1-3857656

Direct Replacement OMC / Volvo V6 Center Riser Exhaust Manifold, OMC-1-3857656

Mfr. Barr Marine by EDM | Mfr No. OMC-1-3857656

Direct Replacement OMC / Volvo V6 Center Riser Exhaust Manifold, OMC-1-3857656. For OMC / Volvo 3.8 / 4.3L...
$244.86


View Details
Direct Replacement OMC 120 2.5L Log Style Exhaust Manifold, OMC-1-981462

Direct Replacement OMC 120 2.5L Log Style Exhaust Manifold, OMC-1-981462

Mfr. Barr Marine by EDM | Mfr No. OMC-1-981462

Direct Replacement OMC 120 2.5L Log Style Exhaust Manifold, OMC-1-981462. Uses choke heat source through end cap. Replaces OMC # 979729 & 980459. Fits OMC (Chevrolet) 4-Cylinder 153 C.I.D...
$289.67


View Details
Direct Replacement OMC 140hp 3.0L Log Style Exhaust Manifold, OMC-1-984054

Direct Replacement OMC 140hp 3.0L Log Style Exhaust Manifold, OMC-1-984054

Mfr. Barr Marine by EDM | Mfr No. OMC-1-984054

Direct Replacement OMC 140hp 3.0L Log Style Exhaust Manifold, OMC-1-984054. For OMC 181 C.I.D. 140hp 3.0L 4 cylinder engines Replaces OMC part #’s 998083, 980460, 980957 and 982490...
$352.00


View Details
Direct Replacement OMC 155 HP V6 Buick Exhaust Manifold, BV6-1-75-R, BV6-1-75-L

Direct Replacement OMC 155 HP V6 Buick Exhaust Manifold, BV6-1-75-R, BV6-1-75-L

Mfr. Barr Marine by EDM

Direct Replacement OMC 155 HP V6 Buick Exhaust Manifold, BV6-1-75-R, BV6-1-75-L. Fits the Buick V6 engine, all years. Log Style Exhaust Manifold for 155 HP OMC...
$224.00 - $230.14

View Details
Direct Replacement OMC Chevrolet Small Block Round Log Style Exhaust Manifold, OMC-1-979760, OMC-1-979761

Direct Replacement OMC Chevrolet Small Block Round Log Style Exhaust Manifold, OMC-1-979760, OMC-1-979761

Mfr. Barr Marine by EDM

Direct Replacement OMC Chevrolet Small Block Round Log Style Exhaust Manifold, OMC-1-979760, OMC-1-979761. OMC 283, 305, 307 and 350 C.I.D. Fits 185, 200, 225, 230 and 260 H.P...
$277.93 - $285.55

View Details
Direct Replacement OMC Model 120 Exhaust Manifold, OMC-1-982657

Direct Replacement OMC Model 120 Exhaust Manifold, OMC-1-982657

Mfr. Barr Marine by EDM | Mfr No. OMC-1-982657

Direct Replacement OMC Model 120 Exhaust Manifold, OMC-1-982657. Uses choke heat source through exhaust port. Fits OMC 4-Cylinder 153 C.I.D. 120 H.P. 2.5 Liter Chevrolet engines...
$289.67


View Details
Direct Replacement Riser, OMC-20-913784

Direct Replacement Riser, OMC-20-913784

Mfr. Barr Marine by EDM | Mfr No. OMC-20-913784

Direct Replacement Riser, OMC-20-913784. Replaces OMC # 913784...
$154.45


View Details
Direct Replacement Riser, OMC-20-980536

Direct Replacement Riser, OMC-20-980536

Mfr. Barr Marine by EDM | Mfr No. OMC-20-980536

Direct Replacement Riser, OMC-20-980536. Replaces OMC # 979730 & 980536. Fits O.M.C. 120 hp 2.5L Chevrolet engines...
$154.93


View Details
Direct Replacement Riser, OMC-20-982680

Direct Replacement Riser, OMC-20-982680

Mfr. Barr Marine by EDM | Mfr No. OMC-20-982680

Direct Replacement Riser, OMC-20-982680. Replaces OMC# 982680. Fits OMC Small block Chevrolet w/ log style manifolds...
$150.26


View Details
Exhaust Elbow, 155 OMC, 2 1/2 - 3" Hose, 20-0031

Exhaust Elbow, 155 OMC, 2 1/2 - 3" Hose, 20-0031

Mfr. Barr Marine by EDM | Mfr No. 20-0031

Exhaust Elbow, 155 OMC, 2 1/2 - 3" Hose, 20-0031...
$113.64


View Details
Exhaust Gasket, OMC47-909314, Pack of 5

Exhaust Gasket, OMC47-909314, Pack of 5

Mfr. Barr Marine by EDM | Mfr No. OMC47-909314

Exhaust Gasket, OMC47-909314, Pack of 5...
$46.15


View Details
Manifold to Riser Adapter, OMC-20-908014

Manifold to Riser Adapter, OMC-20-908014

Mfr. Barr Marine by EDM | Mfr No. OMC-20-908014

Manifold to Riser Adapter, OMC-20-908014. For use with OMC riser # 980188 & 910380. Fits O.M.C. 120 hp 2.5L Chevrolet engines...
$72.00


View Details
Mounting Hardware kit, 20-0002P for Barr Style Risers & Elbows

Mounting Hardware kit, 20-0002P for Barr Style Risers & Elbows

Mfr. Barr Marine by EDM | Mfr No. 20-0002P

Mounting Hardware kit, 20-0002P for Barr Style Risers & Elbows...
$23.57


View Details
OMC Riser Gasket OMC47-908013 - Pack of 5

OMC Riser Gasket OMC47-908013 - Pack of 5

Mfr. Barr Marine by EDM | Mfr No. OMC47-908013

OMC Riser Gasket OMC47-908013 - Pack of 5. OMC Riser Gaskets for OMC-20-908014...
$15.00


View Details
Thermostat Gasket, 155 OMC, Pack of 5

Thermostat Gasket, 155 OMC, Pack of 5

Mfr. Barr Marine by EDM | Mfr No. OMC47-314809

Thermostat Gasket, 155 OMC, Pack of 5...
$14.42


View Details
OMC Manifold/Riser Kit  for Ford V8 (302/351) CID, OMC

OMC Manifold/Riser Kit for Ford V8 (302/351) CID, OMC

Mfr. GLM

OMC Manifold/Riser Kit for Ford V8 (302/351) CID, OMC and Volvo Penta, Carburator engine. Complete GLM Manifold Set for Ford V8 (302/351) CID Raw/Fresh Water Cooling System...
$665.58 - $1,029.98

View Details
5.8 Exhaust Manifold, OMC / Ford 302 / 351 5.0 / 5.8L, 3852347

5.8 Exhaust Manifold, OMC / Ford 302 / 351 5.0 / 5.8L, 3852347

Mfr. O.M.C. | Mfr No. 3852347

5.8 Exhaust Manifold, OMC / Ford 302 / 351 5.0 / 5.8L, 3852347...
$705.87


View Details
Manifold Gasket, OMC 3.0 HO Engine, 3853304

Manifold Gasket, OMC 3.0 HO Engine, 3853304

Mfr. O.M.C. | Mfr No. 3853304

Manifold Gasket, OMC 3.0 HO Engine, 3853304...
$16.69


View Details
Adapter Plate Kit, 181 c.i. & 3.0L GM Engines

Adapter Plate Kit, 181 c.i. & 3.0L GM Engines

Mfr. Osco Motors | Mfr No. MO4-HOK

Adapter Plate Kit, 181 c.i. & 3.0L GM Engines . Fits 181 c.i. 3.0L GM engines - MerCruiser, OMC & Marine Power...
Request Availability

View Details
Exhaust Manifold, Small Block GM 305 - 350 V8, 2441/2442

Exhaust Manifold, Small Block GM 305 - 350 V8, 2441/2442

Mfr. Osco Motors

Exhaust Manifold, Small Block GM 305 - 350 V8, 2441/2442. Fits 305 - 350 CID GM small block V8 engines. Includes hose cap, clamp, and pipe plugs...
Request Availability

View Details
Exhaust Manifold Gasket, OMC 2.3 Engine, 913393

Exhaust Manifold Gasket, OMC 2.3 Engine, 913393

Mfr. Sierra | Mfr No. 18-0401

Exhaust Manifold Gasket, OMC 2.3 Engine, 913393...
$7.97


View Details
Exhaust Manifold, OMC 140 HP 3.0L 4 Cylinder, 984054, 18-1901

Exhaust Manifold, OMC 140 HP 3.0L 4 Cylinder, 984054, 18-1901

Mfr. Sierra | Mfr No. 18-1901

Exhaust Manifold, OMC 140 HP 3.0L 4 Cylinder, 984054, 18-1901. Fits most 140 HP 3.0L 4 Cylinder...
$504.03


View Details
Exhaust Manifold, OMC Sterndrive / Cobra, Ford V-8 302 & 351W, 18-1904

Exhaust Manifold, OMC Sterndrive / Cobra, Ford V-8 302 & 351W, 18-1904

Mfr. Sierra | Mfr No. 18-1904

Exhaust Manifold, OMC Sterndrive / Cobra, Ford V-8 302 & 351W, 18-1904. Manifold for the Port and Starboard. Use with:Exhaust Manifold Gasket: 18-0183 or 18-2896...
$413.32


View Details
Exhaust Manifold, OMC Sterndrive, 1979-1989 V-8 Starboard Side, 18-1902

Exhaust Manifold, OMC Sterndrive, 1979-1989 V-8 Starboard Side, 18-1902

Mfr. Sierra | Mfr No. 18-1902

Exhaust Manifold, OMC Sterndrive, 1979-1989 V-8 Starboard Side, 18-1902. The manifold fits most GM V-8 small blocks with end riser. This product also includes the exhaust manifold gasket...
$169.50


View Details
Exhaust Manifold, V8 OMC Sterndrive, 1979-1989 (Port Side), 18-1903

Exhaust Manifold, V8 OMC Sterndrive, 1979-1989 (Port Side), 18-1903

Mfr. Sierra | Mfr No. 18-1903

Exhaust Manifold, V8 OMC Sterndrive, 1979-1989 (Port Side), 18-1903 fits most GM V8 small blocks with end riser...
$161.68


View Details
Direct Replacement OMC Ford V8 Banana Style Exhaust Manifold, OMC-1-980959

Direct Replacement OMC Ford V8 Banana Style Exhaust Manifold, OMC-1-980959

Mfr. Barr Marine by EDM | Mfr No. OMC-1-980959

Direct Replacement OMC Ford V8 Banana Style Exhaust Manifold, OMC-1-980959. Replaces OMC part # 980572 and # 980959 for Models 170, 175, 190 and 235 H.P....
$392.00


View Details
End Cap Gasket, OMC47-908935, Pack of 5

End Cap Gasket, OMC47-908935, Pack of 5

Mfr. Barr Marine by EDM | Mfr No. OMC47-908935

End Cap Gasket, OMC47-908935, Pack of 5. Need 1 per riser...
$12.50


View Details
OMC 3.0 Exhaust Manifold, OMC 3.0L, 986994

OMC 3.0 Exhaust Manifold, OMC 3.0L, 986994

Mfr. O.M.C. | Mfr No. 0986994

OMC 3.0 Exhaust Manifold, OMC 3.0L, 986994. Fits Various 3.0 OMC applications W/Holley Carb...
Request Availability

View Details
Exhaust Manifold, GM 4.3L V6, 3857656

Exhaust Manifold, GM 4.3L V6, 3857656

Mfr. Sierra | Mfr No. 18-1848

Volvo / OMC Exhaust Manifold, GM 4.3L V6, 3857656...
$228.99


View Details
Exhaust Manifold Gasket Set - OMC 2.5L(85-85), 3.0L(85-88), 18-4369

Exhaust Manifold Gasket Set - OMC 2.5L(85-85), 3.0L(85-88), 18-4369

Mfr. Sierra | Mfr No. 18-4369

Exhaust Manifold Gasket Set - OMC 2.5L(85-85), 3.0L(85-88), 18-4369...
$37.14


View Details
Products: 1 - 39 of 39
Page:  1

Ask. Answer. Discuss.
Post a question or comment about OMC Exhaust Manifolds to our online boating community.
Question
exhaust manifold

I have a 1967 120 hp omc stern drive with a chev engine with dual carbs. Would you have an exhaust manifold for this engine and do you know where I can find ball gears for the stern drive?

Submitted by: Huey
Answer

Unfortunately that manifold is out of production and we do not have access to it. You will probably need to change everything over to a single carb system or try to find a used one


Question
exhaust manifolds

I have a 1989 bayliner with a 5.0l cobra omc.
Riser at end, there are 2 hose ends with 1 at each end. I can’t find the right ones can you help.

Submitted by: karl
Answer

The Exhaust Boot should be able to help for your application.


Question
Omc exhaust manifold

I got an old omc 120hp engine that needs a new exhaust manifold.
On my manifold is a nr.
Scc 1-20-77 909466
Can you help me?

Submitted by: Erlend Svoren
Answer

We do have an Exhaust Manifold, and Riser available for a 1978 OMC 120.


Question
I am trying to locate an exhaust manifold for my 1989 OMC Cobra Sterndrive

I am trying to locate an exhaust manifold for my 1989 OMC Cobra Sterndrive (2.3L0 engine). I believe the part number is 0986041. Can you locate one for me and if so how much? I am located in the UK.

Submitted by: David Cooke
Answer

Sorry there is no manifold available; this is obsolete. There is only a racing version available that is built in Australia, cost over here 1700.00 US plus freight.


 
Name / Nickname:

Email:
(optional)


Type of Submission:

Subject:

Message:
Tips on Reviewing:
  • How you use the product
  • What you like about this product
  • How can this product be improved
  • When asking about Engine Parts, please include: Year, Make, Model and Serial Number of engine or part

Please do not include: personal information, profanity or copyrighted works. Conditions of Use