Universal GM V8 Big Block Inboard Exhaust Manifold Exploded View

Sierra
Universal GM V8 Big Block Inboard Exhaust Manifold Exploded View
Universal Inboard Exhaust Manifold Exploded View Diagram and Parts
Fits GM 454/502 CID V8 Big Block
Figure #DescriptionO.E.M. #Sierra #Application
1MANIFOLDBARR CHVA-1-84, MARINE POWER 0991-110 18-1898Fits 454/502 cu. in. GM Big Block V8 engines. Used with Manifold Gasket: 18-0418.
2MANIFOLD SPACERN/A 18-1949Use with Manifold: 18-1898.
3BLACKSTEEL PLUGN/A 18-4258Thread Size: 3/4". Use with Manifold Spacer: 18-1949.
4HOSE FITTINGN/A18-82163/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
5HOSE FITTINGN/A 18-44613/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
6HOSE FITTINGN/A18-82153/4" - 14NPT X 3/4" Hose (Corrosion Resistant Brass Fitting)
7MANIFOLD GASKETCRUSADER 96653 18-0418Use with Manifold: 18-1898
8MOUNTING KIT (BLOCKED GASKET)N/A 18-8535Use with Risers: 18-1939, 18-1999, 18-1907. Includes 18-0476 elbow gasket. (Use with a closed cooling system)
9MOUNTING KIT (OPEN GASKET)BARR 20-0082-P 18-4364Use with Risers: 18-1999, 18-1907, & 18-1939. Includes 18-2854 elbow gasket.
10ELBOW GASKET (BLOCKED)BARR 01-0105 18-0476Used with Risers: 18-1939, 18-1999. Included in 18-8535 mounting kit.
11ELBOW GASKET (OPEN)BARR 01-0107 18-2854Used with Risers: 18-1939, 18-1999. Included in 18-4364 mounting kit.
12MANIFOLD ELBOWBARR 200-0082 18-1999Comes with 18-4364 (open) mounting package. If blocked mounting kit is required use 18-8535 mounting kit. Use with Manifold: 18-1898; Riser Gasket: 18-2854 (open) or 18-0476 (blocked)
13MANIFOLD ELBOWBARR 20-0100, MARINE POWER 0992-593 18-1939Use with Manifold: 18-1898; Riser Gasket: 18-2854 (open) or 18-0476 (blocked); Mounting Kit: 18-4364 (open) or 18-8535 (blocked)
14MOUNTING BOLTN/ANSSIncluded in 18-4364 & 18-8535 mounting kits.
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Full StarFull StarFull StarEmpty StarEmpty Star1988 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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Full StarFull StarEmpty StarEmpty StarEmpty Starexhaust elbow from sierra exhaust manifold gasket set
by Jimmie from Hampden, Maine on July 14, 2014
Poor casting. The slots for the 2 bolts nearest the exhaust exit of the elbow were not cast big enough to get the box end of a wrench onto the bolt. Infact it was necessary to use the open end of the wrench at a very steep angle to get them tightened down. The seal took because the bolts at the back of the elbow were tightened last. This really needs to be addressed by the manufacture.
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by Stan from Jacksonville, Florida on August 07, 2014
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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.
Q:
Will this fit a GM 5.7 350 marine engine?
A:
We can only match it up by cross referencing the OEM numbers it works with. Those are: Barr # 20-0082 and Marine Power # 0992-000.
Q:
PART T-20939 iS THE BOTTOM BLOCKED OR OPEN CAN IT BE USED ON A BLOCKED BOTTOM CAN i GET A PIC OF BOTTOM?
A:
It is open. We don't have a picture, but we can send you one by contacting us at the number at the top of the page.
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Your Price: $146.11
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Part # 18-1939 ValueShip™ Eligible
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Replaces OEM part #
  • BARR 20-0100
  • MARINE POWER 0992-593 Barr
For: Barr, Indmar and Marine Power Ford Small Block V8 302-351cu. in. GM Small Block V8 305-350cu. in., GM Big Block V8 454cu in

Use with:
  • Manifold: 18-1997-1, 18-1998-1 or 18-1898
  • Riser Gasket: 18-2854 open or 18-0476 blocked
  • Mounting kit: 18-4364 blocked or 18-8535 open

Your Price: $10.46
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Part # 18-4364 ValueShip™ Eligible
Open
Replaces OEM part #
  • BARR 20-0082-P
Use with:
  • Riser 18-1999, 18-1939, 18-1907
Includes 18-2854 elbow gasket
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Part # 18-0476 ValueShip™ Eligible
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Blocked
Replaces OEM part #
  • BARR 01-0105
Fits:
  • Barr, Indmar & Marine Power Ford Small Block V8 302-351 cu.in.

Used with:
  • Riser: 18-1939
  • Riser: 18-1907
  • Manifold: 18-1898
  • Elbow: 18-1999
Included in 18-8535 mounting kit

Sierra part # 18-0476 riser block gaskets

The gaskets are constructed of a proven hi-temperature composite that does not contain asbestos materials. This gasket material has been designed to handle the high temperatures capable of exceeding 500 degrees Fahrenheit as well as harsh marine environments.

Each Sierra riser block-off gasket ensures the factory matched footprint of exhaust ports. The Typical thickness for these products can range up to 1/16". Be certain to thoroughly clean and remove the entire old gasket. When joining two non-machined surfaces, an exact match is not always possible. It is recommended that you use a thin layer of high-temperature silicone sealer on both sides of gasket prior to installation to create a more perfect reliable seal.
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Part # 18-4461 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 22-807155
3/4" - 14 NPT X 1" Hose
Corrosion Resistant Brass Fitting
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Part # 18-8535 ValueShip™ Eligible
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)
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Part # 18-1949 ValueShip™ Eligible
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For: Barr, Indmar and Marine Power Ford Small Block V8 302-351cu.in., GM Small Block V8 305-350cu.in., GM Big Block V8 454cu.in.

Used with:
  • Manifold: 18-1998-1, 18-1997-1 and 18-1898
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Part # 18-1999 ValueShip™ Eligible
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Replaces OEM part #
  • BARR 200-0082
Use with:
  • Manifold: 18-1997-1 or 18-1998-1 or 18-1898
  • Riser Gasket: 18-2854 open, or 18-0476 blocked
  • Mounting Kit: 18-4364 open, or 18-8535
Comes with 18-4364 open Mounting Package
If blocked mounting kit is required, use 18-8535
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Part # 18-2854-9 ValueShip™ Eligible
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Pkg of 2
Replaces OEM part #
  • BARR 01-0107

Use with:
  • Risers: 18-1999, 18-1939, 18-1907
Included in 18-4364 mounting kit
Your Price: $3.42
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Part # 18-4258 ValueShip™ Eligible
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Thread Size 3/4"
Blacksteel Plug
18-9004 - Pipe Sealant with Teflon is recommended for use on plug threads
Use with Manifold Spacer: 18-1949

Replaces OEM part #
  • MERCURY MARINE 22-41622
  • MERCURY MARINE 22-33198A1
Your Price: $9.49
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Part # 18-0418 ValueShip™ Eligible
Replaces OEM part #
  • CRUSADER 96653
  • BARR CHVA-47-0000
  • GM 3852472
  • MERCURY MARINE 27-46820
  • OMC 909613
  • VOLVO 3852472
Used with:
    Manifolds: 18-1957-1, 18-1982, 18-1929, 18-1933, 18-1898
Included in 18-8532 mounting kit
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Part # T-20898
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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

Your Price: $118.45
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Part # T-20939 ValueShip™ Eligible
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Barr and Marine Power Riser, 4" Outlet, 10° down angle.


Replaces:

  • Barr # 20-0100
  • Marine Power # 0992-593

Engine Type:
Ford Small Block V8 302-351 cu.inGM Small Block V8 305-350 cu.in.GM Big Block V8 454 cu.in.


Engine Model:
Universal fit

Your Price: $103.59
Save: $78.52
(43% Off $182.11)
Part # T-20999 ValueShip™ Eligible
Replaces:
  • Barr # 20-0082
  • Marine Power # 0992-000

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