OMC Sterndrive/Cobra Exhaust Manifold Elbow Mounting Kits

Exhaust Manifold Elbow Mounting Package - Sierra
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Part # 18-4364 ValueShip™ Eligible
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Open
Replaces OEM part #
  • BARR 20-0082-P
Use with:
  • Riser 18-1999, 18-1939, 18-1907
Includes 18-2854 elbow gasket
Exhaust Elbow Mounting Kit - Sierra
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Replaces OEM part #
  • OMC 3856444
For:
  • OMC/Volvo GM Small Block V8 305-350 cu.in.

Used With:
  • Riser: 18-1909
Exhaust Manifold Elbow Mounting Kit - Sierra
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OMC GM Small Block V8 305-350 cu. in.
( 1979-1989 ) and multiple application
Ford and GM Risers
Used with: Riser 18-1921
Exhaust Manifold Elbow Mounting Kit - Sierra
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Used with: Exhaust Elbow 18-1921
Exhaust Elbow Mounting Kit Blocked - Sierra
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Blocked
Replaces OEM part #
  • BARR 20-0082
  • BARR 20-0100
For:
  • Barr, Indmar and Marine Power Ford Small Block V8 302-351 cu. in., GM Small Block V8 305-350 cu. in., GM Big Block V8 454 cu. in.

Use with:
    Risers: 18-1939, 18-1999, and 18-1907
    Includes 18-0476 elbow gasket. (Use with a closed cooling system)
Sierra
Based On 1 Review | Write Review
1988 OMC cobra chev 350
by John from Bellevue, Washington on August 01, 2013
Used the gasket but... the exhaust hole is about 1/8 inch too large all the way around.. only covers about half of the exhaust flange all the way around...the four bolts that I received are too large and wont even fit in the holes in gasket.. the 3/4 inch pipe plug has no use at all since this is only for the fresh water cooling application...if you used this plug and this gasket you would burn up your exhaust.thanks john mcbride. if you can get the manufacture to correct this problem please advise and I will reorder the newer gaskets. or email me...
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Q:
What are the bolt hole dimensions?
A:
Sierra does not have bolt hole dimensions unfortunately. It is only cross referenced by OEM number. OEM number for this package is 20-0082-P.
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