OMC Sterndrive/Cobra Exhaust Manifolds

Refine Parts List
HP/Liter/CID/Model :
Year :

HP/Liter/CID/Model

Year

Exhaust Manifold

Exhaust Manifold

5 1988 18-1902 T-20902
[350] King Cobra 1988 18-1902 T-20902
5 1988 18-1903 T-20903
[350] King Cobra 1988 18-1903 T-20903
5.7 1988 18-1902 T-20902
[350] King Cobra 1988 18-1902 T-20902
5.7 1988 18-1903 T-20903
[350] King Cobra 1988 18-1903 T-20903
[5.0] Liter 1987 18-1902 T-20902
[5.0] Liter 1987 18-1903 T-20903
[5.7] Liter 1987 18-1902 T-20902
[5.7] Liter 1987 18-1903 T-20903
[5.0] Liter 1986 18-1902 T-20902
[5.0] Liter 1986 18-1903 T-20903
[5.7] Liter 1986 18-1902 T-20902
[5.7] Liter 1986 18-1903 T-20903
[5.0] Liter 1985 18-1902 T-20902
[5.0] Liter 1985 18-1903 T-20903
[5.7] Liter 1985 18-1902 T-20902
[5.7] Liter 1985 18-1903 T-20903
[5.0] Liter 1984 18-1902 T-20902
[5.0] Liter 1984 18-1903 T-20903
[5.7] Liter 1984 18-1902 T-20902
[5.7] Liter 1984 18-1903 T-20903
[5.0] Liter 1983 18-1902 T-20902
[5.0] Liter 1983 18-1903 T-20903
[5.7] Liter 1983 18-1902 T-20902
[5.7] Liter 1983 18-1903 T-20903
[5.0] Liter 1982 18-1902 T-20902
[5.0] Liter 1982 18-1903 T-20903
[5.7] Liter 1982 18-1902 T-20902
[5.7] Liter 1982 18-1903 T-20903
800 Series, [200] 1981 18-1902 T-20902
800 Series, [230] 1981 18-1902 T-20902
800 Series, [260] 1981 18-1902 T-20902
800 Series, [200] 1981 18-1903 T-20903
800 Series, [230] 1981 18-1903 T-20903
800 Series, [260] 1981 18-1903 T-20903
800 Series, [185-260] 1980 18-1902 T-20902
800 Series, [185-260] 1980 18-1903 T-20903
800 Series, [185-230] 1979 18-1902 T-20902
800 Series, [185-230] 1979 18-1903 T-20903
800 Series, [260] 1979 18-1902 T-20902
800 Series, [260] 1979 18-1903 T-20903
800 Series, [185-225] 1978 18-1902 T-20902
800 Series, [185-225] 1978 18-1903 T-20903
[175-235] 1976 18-1904 -
[175-235] 1975 18-1904 -
170 1974 18-1904 -
190 1974 18-1904 -

HP/Liter/CID/Model

Year

Exhaust Manifold

Exhaust Manifold

Refine Parts List
HP/Liter/CID/Model :
Year :
Blowout
Save 18%-42% Off.
Limited Sale Price: $578.02
Save: $127.13
(18% Off $705.15)
Part # 18-1901
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
Port and Starboard

Replaces OEM part #
  • OMC 984054
  • Application: GM 181 cu. in. 3.0L, 4 cylinder. Fits most 140 models
    Use with: Exhaust Elbow Gasket: 18-1204, End Plate: 18-4009
Limited Sale Price: $172.59
Save: $105.87
(38% Off $278.46)
Part # 18-1902
SHIPS TODAY!* if ordered in 1 hr 52 mins.
No Reviews  |  Write Review  |  Ask Question
V-8 Starboard Side
Fits most GM V-8 small blocks with end riser
Use with: Mounting Kit 18-8502

Replaces OEM part #
  • OMC 912441
Limited Sale Price: $172.82
Save: $99.91
(36% Off $272.73)
Part # 18-1903
SHIPS TODAY!* if ordered in 1 hr 52 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • OMC 912442 V-8 Port side
    Fist most GM V-8 small blocks with end riser
    Use with: mounting Kit: 18-8502
Limited Sale Price: $445.30
Part # 18-1904
SHIPS TODAY!* if ordered in 1 hr 52 mins.
No Reviews  |  Write Review  |  Ask Question
Port and Starboard
Fits most Ford V-8 302 & 315 W with end riser
Use with: Exhaust Manifold Gasket: 18-0183 or 18-2896

  • Replaces O.E.part #

  • OMC 980959 V-8, either side
    Your Price: $205.91
    Save: $110.35
    (34% Off $316.26)
    Part # 18-1986-1
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    No Reviews  |  Write Review  |  Ask Question
    Port and Starboard
    For:
    • GM Small Block V8 305-350 ci
    • 5.0L & 5.7L GM (New Style)

    Use with:
    • Exhaust Manifold Gasket: 18-2949
    • Mounting Kit:18-8550

    Replaces OEM part #
    • OMC 3852374-2
    • OMC 3857723
    • VOLVO 3852374-2
    • VOLVO 3857723
    Limited Sale Price: $184.79
    Save: $86.09
    (31% Off $270.88)
    Part # 18-1997-1
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    Hurry! Only 1 left in stock
    Universal Center Riser Manifold
    Port or Starboard
    Fits:
    • GM 283, 305, 307, and 350 CID engines
    • Chriscraft 283, 302, 307 and 350 CID engines
    • Crusader 283 and 327 CID engines thru 1964; 305, 307 and 350 CID engines 1965 and later
    • Daytona 200-283 and 300-327
    • Flagship 283, 327 and 350 CID engines
    • Pacer 305, 307 and 350 CID engines 1965 and later
    • Mercury 190, 198, 225, 250, 270, 228, 898, 260, 255 and 280 models
    • OMC 283, 305, 307 and 350 CID engines 1968-1980
    • Volvo 307 and 350 CID engines
    Use 18-0604 Exhaust Manifold Gasket Set

    Replaces OEM part #
    • BARR CHV-1-83
    Your Price: $194.77
    Save: $83.59
    (30% Off $278.36)
    Part # 18-1998-1
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    Port or Starboard
    Universal Center Riser Manifold

    Fits: Ford 302 and 351 CID engines
    Crusader 302 and 351 CID engines
    Interceptor 221, 260, and 289 cid engines
    Commander, Mercury, OMC, Palmer, Pleasurecraft & Waukesha

    Comes with: 18-4363 mounting package
    Use with: Exhaust Manifold Gasket Set 18-0603

    Replaces OEM part #
    • BARR FM-1-83
    Your Price: $200.99
    Save: $61.61
    (23% Off $262.60)
    Part # 9-40101
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    No Reviews  |  Write Review  |  Ask Question
    Manifold - Fits both sides 221, 255, 260, 289, 302 and 351 CID V-8
    Limited Sale Price: $218.78
    Save: $109.00
    (33% Off $327.78)
    Part # T-20898
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    No Reviews  |  Write Review  |  Ask Question

    Barr and Marine Power Manifold


    Replaces:

    • Barr CHVA-1-84
    • Marine Power 0991-110

    Engine Type:
    GM Big Block V8 454 cu.in.


    Engine Model:
    Universal fit

    Limited Sale Price: $161.35 (Out of stock)
    Save: $114.33
    (41% Off $275.68)
    Part # T-20902
    No Reviews  |  Write Review  |  Ask Question

    OMC Manifold, starboard


    Replaces OEM #:

    • OMC 909280
    • OMC 912441

    Engine Type:
    GM Small Block V8 305-350 cu.in.


    Engine Years:
    1979 to 1989

    (Out Of Stock)
    Low Price Guarantee
    Limited Sale Price: $161.35
    Save: $108.65
    (40% Off $270.00)
    Part # T-20903
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    No Reviews  |  Write Review  |  Ask Question

    OMC Manifold, port


    Replaces OEM #:

    • OMC 909312
    • OMC 908488

    Engine Type:
    GM Small Block V8 305-350 cu.in.


    Engine Model Years:
    1979 to 1989

    Limited Sale Price: $212.87 (Out of stock)
    Save: $146.13
    (40% Off $359.00)
    Part # T-20905
    No Reviews  |  Write Review  |  Ask Question

    Mercruiser Elbow/Reservoir


    Replaces OEM #:

    • Mercruiser 90880
    Cap included.

    Fits Mercruiser cast iron manifold #99908. Fitting not included.


    Engine Type:
    Mercruiser 3.7L engines


    Engine Model:
    165, 170, 180, 190, 470 and 3.7L

    (Out Of Stock)
    Low Price Guarantee
    Limited Sale Price: $173.61
    Save: $102.49
    (37% Off $276.10)
    Part # T-20986
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    Hurry! Only 1 left in stock
    No Reviews  |  Write Review  |  Ask Question

    OMC and Volvo Manifold


    Replaces OEM #:

    • OMC 914035
    • OMC 3852374
    • Volvo 3852374-2

    *Fits both sides of engine.


    Engine Type:
    GM Small Block V8 305-350 cu.in

    Limited Sale Price: $154.07
    Save: $114.10
    (42% Off $268.17)
    Part # T-20997
    SHIPS TODAY!* if ordered in 1 hr 52 mins.
    No Reviews  |  Write Review  |  Ask Question

    Barr and Marine Power Manifold


    Replaces OEM #:

    • Barr CHV-1-83
    • Marine Power 0994-000

    Engine Type:
    GM Small Block V8 305-350 cu.in.


    Engine Model:
    Universal fit

    Limited Sale Price: $179.59 (Out of stock)
    Save: $95.99
    (34% Off $275.58)
    Part # T-20998
    No Reviews  |  Write Review  |  Ask Question

    Barr and Indmar Manifold


    Replaces OEM #:

    • Barr FM-1-83
    • Indmar 53-2008

    Engine Type:
    Ford Small Block V8 302-351 cu.in


    Engine Model:
    Universal fit

    (Out Of Stock)
    Low Price Guarantee
    Sierra
    Average Customer Review for Exhaust Manifold - 18-1997-1 - Sierra
    Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
    Full StarFull StarFull StarFull StarFull Starexhaust manifold
    by Jimmie from Hampden, Maine on July 14, 2014
    Went on well and the parts all fit.
    (1 of 1 people found this review helpful)
    Was this review helpful?
    Average Customer Review for Exhaust Manifold - 18-1998-1 - Sierra
    Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
    Full StarFull StarFull StarFull StarFull Star100
    by John from Sturbridge, Massachusetts on November 11, 2015
    These manifolds wear a direct fit on my 1987 ski centurion. I am so happy with the fast shipping and availability of Iboats thank you
    (0 of 1 people found this review helpful)
    Was this review helpful?
    Q:
    I notice these manifolds only have one Bolt per port. Doesn't seem enough for a good seal. 5.8l Ford 1991?
    A:
    Well this particular manifold can be used for the port or starboard side and it comes with the mounting kit which contains four bolts. This fits: Ford 302 and 351 CID engines, Crusader 302 and 351 CID engines, Interceptor 221, 260, and 289 cid engines, Commander, Mercury, OMC, Palmer, Pleasurecraft & Waukesha.
    Ask a question
    Question & Answer Guidelines
    This product ships in 1 to 3 business days.
    Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
    Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
    Standard Shipping Policies