Mercruiser GM 4 Cylinder (120, 140, 2.5L, 3.0L) Sterndrive Exhaust Manifold Exploded View

Sierra
Mercruiser GM 4 Cylinder (120, 140, 2.5L, 3.0L) Sterndrive Exhaust Manifold Exploded View
Mercruiser Sterndrive Exhaust Manifold Exploded View Diagram and Parts
Fits GM 4-Cylinder 181 cu. In.
Models 120, 140, 2.5L &3.0L
Figure #DescriptionO.E.M. #Sierra #Application
1MANIFOLD9582A518-1954-1Fits 2.5 & 3.0L 181 CID, Model 140 with Rochester carburetor w/ electrical choke (1983-89). Use with Manifold Gasket: 18-1204.
2MANIFOLD96705A118-1955-1Fits 3.0L 181 CID, Model 140 with Rochester carburetor w/ mechanical choke (1968-82). Use with Manifold Gasket: 18-1204. Mounting Hardware: 18-8549.
3MANIFOLD99798A1818-1956-1Fits 3.0L 181 CID, Model 140 & 3.0 with Mercarb carburetor w/ electrical choke (1983-95). Use with Manifold Gasket: 18-1204.
4MANIFOLD GASKET27-9642918-1204Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
5FRONT/ END CAP GASKET27-48043-118-2832Fits Port & Starboard Caps of Manifolds: 18-1954-1, 18-1955-1, 18-1956-1.
6FRONT PLATE60252A218-4009Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
7END PLATE80562918-5021Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
8MOUNTING BOLTN/ANSSIncluded in 18-8512 mounting kit.
9EXHAUST BOOT32-44348T18-27484" Inside Diameter. Use with 18-1975 elbow.
10MANIFOLD ELBOW76351A218-1971Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow Gasket 18-2833; Mounting Kit 18-4362
11MANIFOLD ELBOW76771A318-1978Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow Gasket 18-2833; Mounting Kit 18-4362
12MANIFOLD ELBOW55538A218-1973Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow Gasket 18-2833; Mounting Kit 18-8508
13MANIFOLD RISER12076A218-1975Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow Gasket 18-2819; Mounting Hardware 18-8551: Exhaust Boot 18-2748.
14MOUNTING BOLTN/ANSSIncluded in 18-8551 mounting hardware.
15MOUNTING STUDN/A18-32333/8-24, 3/8-16 X 1 3/4. Included in 18-4362 mounting kit.
16MOUNTING BOLTN/ANSSIncluded in 18-8508 mounting kit.
17MOUNTING BOLTN/ANSSIncluded in 18-8549 mounting kit.
18MOUNTING KITN/A18-4362Use with Elbows: 18-1971 & 18-1978. Includes 18-2833 elbow gasket.
19MOUNTING KITN/A18-8512Use with Front Plate: 18-4009 & End Plate (NSS). Includes 18-2832 front/end cap gasket.
20HARDWARE KITN/A18-8549Includes only hardware for 18-1955-1 manifold.
21HARDWARE KITN/A18-8551Includes only hardware for 18-1975 elbow.
22MOUNTING KITN/A18-8508Use with Elbow 18-1973. Includes 18-2819 elbow gasket.
23ELBOW GASKET27-99777-218-2833Use with Elbows: 18-1971 & 18-1978. Included in 18-4362 mounting kit.
24CARBURETOR GASKET27-6469218-0356Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
25ELBOW GASKET27-3991518-2819Use with Elbow: 18-1973. Included in 18-8508 mounting kit.
Full StarEmpty StarEmpty StarEmpty StarEmpty Star Based On 1 Review | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Starmake sure you order the right manifold
by Timothy from Port Townsend, Washington on October 06, 2013
I was happy with this manifold this time. The only problem is make sure you order the right manifold, I ordered the wrong one the first time, the discription said it would fit, I put the side plates on then tried to put the manifold on the head and it did not fit so I sent it back and they said that they will not refund my money because the side plates were installed.
(2 of 2 people found this review helpful)
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Average Customer Review for End Cap Gasket - 18-2832-9 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Stargasket
by Ron from Bellflower, California on May 30, 2011
perfect fit works great
(0 of 1 people found this review helpful)
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Average Customer Review for Sierra 18-1971 Exhaust Manifold Elbow
Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarGood part
by Glen from Shaunavon, Saskatchewan on February 01, 2015
Elbow fit well, and looks well built.
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Full StarFull StarFull StarFull StarFull StarEXCELLENT AFTERMARKET PART
by James from Hamptonville, North Carolina on September 27, 2011
This elbow is far superior to the "stock" units that are no longer available. It is solid cast for as twin-wall and the bolt mating end is stainless steel!
(2 of 2 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarGood all around
by Travis from Ithaca, New York on June 05, 2016
Just what I ordered....
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Full StarFull StarFull StarFull StarFull StarExhaust Manifold Elbow Riser - Sierra
by William from Poquoson, Virginia on May 11, 2012
Perfect fit and with everything I needed included, it installed in minutes.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarReview for Exhaust Manifold Elbow Mounting Package for Mercruiser, Barr MC20-60426P, GLM 5
by a Customer on May 28, 2009
(1 of 2 people found this review helpful)
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Full StarFull StarFull StarFull StarEmpty Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarEmpty StarReview for Sierra 18-8512 Exhaust Elbow Mounting Kit
by a Customer on May 28, 2009
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Full StarFull StarFull StarFull StarFull Star Based On 7 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarPerfect fit!
by Richard from Tampa, Florida on October 20, 2015
Package came on time and included two gaskets for multiple applications. Perfect fit!
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Full StarFull StarFull StarFull StarFull StarFits
by Adam from Bowling Green, Kentucky on March 03, 2014
Fits, that all that's required. Does the job.
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Full StarFull StarFull StarFull StarFull Staralways nice parts
by Jay from Victor, Montana on October 06, 2013
great fitting as usual. Thanks for the great service .Jay
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Full StarFull StarFull StarFull StarFull StarGood
by Zach from West Valley, Utah on September 07, 2012
This worked on my engine perfectly. I have a 1974 Mercruiser with a 302 Ford in it.
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Full StarFull StarFull StarFull StarEmpty StarProduct was fine, severe shipping issues
by Mike from Lumberton, North Carolina on May 18, 2012
Product was fine. Logistics at iboats getting the product shipped in a timely manner needs work. It was not shipped for 24 hours after I ordered the product.
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Full StarFull StarFull StarFull StarFull Starexhaust gasket
by Ron from Bellflower, California on May 30, 2011
fixed our problem. thanks
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarReview for Sierra 18-2833 Exhaust Elbow Gasket
by a Customer on October 06, 2008
perfect
(0 of 1 people found this review helpful)
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Average Customer Review for Carburetor Gasket - 18-0356 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarCarburetor Gasket for Mercruiser
by James from Rochester, New York on August 01, 2013
It works!
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Full StarFull StarFull StarEmpty StarEmpty Star Based On 2 Reviews | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Starwrong part
by John from Callaway, Florida on July 03, 2014
Nice quality gasket, it did not fit my application
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Full StarFull StarFull StarFull StarFull StarGreat product and service
by David from Redding, California on May 14, 2013
Great prices and quality products along with fast shipping! No problems with anything and will use again for more items.
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Q:
I just took down my 1975 198. I found that the port side elbow riser did not have a blocking plate and the starboard side does. Should both sides have the blocking plate?
A:
Yes both sides should have a blocking plate
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Your Price: $420.30
Save: $67.54
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Part # 18-1954-1
Hurry! Only 1 left in stock
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Replaces OEM part #
  • MERCURY MARINE 95862A5
Fits most late Model 2.5L 153 CID & 3.0L 181 CID with Rochester Carb w/ electrical choke, 5 BOLT PATTERN (1983-89)
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-1204
    End Plate: 18-4009
Mounting Hardware: 18-8549
Your Price: $333.96
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(21% Off $426.80)
Part # 18-1955-1
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Replaces OEM part #
  • MERCURY MARINE 96705A1
Fits most early Model 3.0L 181 CID with Rochester Carb. 5 bolt pattern and 2.5L, 153CID (1968-82) Port & Starboard, New Style
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-1203
    End Plate: 18-4009
Your Price: $281.59
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Part # 18-1956-1
Replaces OEM part #
  • MERCURY MARINE 806867A 8
  • MERCURY MARINE 99798A18
Fits most late Model 2.5L 153 CID and 3.0L 181 CID, Model 140 & 3.0 with MerCarb 5 bolt pattern with electric choke (1983-95), Port & Starboard
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-1204
    End Plate: 18-4009
Your Price: $18.21
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Part # 18-1204-9 ValueShip™ Eligible
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Replaces OEM part #
  • OMC 912164
    Use With Manifold: 18-1901, 18-1954-1, 18-1955-1, 18-1956-1
  • MERCURY MARINE 27-96429
Your Price: $2.74
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Part # 18-2832-9 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 27-48043-1
Package of 2
Fits Port & Starboard Caps of Manifold: 18-1960-1, 18-1950-1, 18-1951-1, 18-1958, 18-1962, 18-1954-1, 18-1955-1, 18-1956-1
Use with Front Plate: 18-4009
End Plate: 18-1912
Included in 18-8512 mounting kit
Your Price: $52.15
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Part # 18-4009 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 60252A2
Use with:
    Manifold: 18-1960-1, 18-1958, 18-1950-1, 18-1951-1, 18-1962, 18-1954-1, 18-1955-1, 18-1956-1
    End Plate Gasket: 18-2832
    Mounting Kit: 18-8512
Your Price: $30.14
Part # 18-5021 ValueShip™ Eligible
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Replaces: Mercruiser 805629

Use with:

    Manifold: 18-1954-1,18-1955-1,18-1956-1
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Part # 18-2748 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 32-44348T
4" Inside Diameter
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Part # 18-1971 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 76351A2
  • MERCURY MARINE 76351A04
  • MERCURY MARINE 76351A1
  • MERCURY MARINE 60426A1
  • MERCURY MARINE 49964A2
  • MERCURY MARINE 49964A1
  • BARR MC20-60426P
For: most early model Mercruiser 140 HP (4 cyl) applications

Use with:
  • Manifold: 18-1960-1, 18-1958, 18-1950-1, 18-1951-1, 18-1962, 18-1954-1, 18-1955-1, 18-1956-1
  • Elbow Gasket: 18-2833
  • Mounting Kit: 18-4362
Your Price: $242.97
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Part # 18-1978 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 76771A2
  • MERCURY MARINE 76771A3
For: V-8 Inboard Applications Only
Use with:
    Manifold: 18-1950-1, 18-1951-1, 18-1958, 18-1962, 18-1954-1, 18-1955-1, 18-1956-1
    Elbow Gasket: 18-2833
    Mounting Kit: 18-4362
Your Price: $148.41
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Part # 18-1973 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 55538A2
For: most early Model 120 HP Mercruiser applications
Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
Elbow Gasket 18-2833
Mounting Kit: 18-8508
Your Price: $147.23
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Part # 18-1975-1 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 12076A2
For: late Model Mercruiser 4 cyl. Engines
Use with:
    Manifold: 18-1955-1, 18-1954-1, 18-1956-1, 18-1901
    Riser Gasket: 18-2833
    Mounting Kit: 18-8551
    Bellow: 18-2748
Your Price: $9.57
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(31% Off $14.06)
Part # 18-4362 ValueShip™ Eligible
Replaces OEM part #
  • BARR MC20-60426P
Use with:
    Elbow: 18-1971 & 18-1978
Includes 18-2833 elbow gasket
Exhaust Manifold Elbow Mounting Kit - Sierra
Your Price: $10.05
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Part # 18-8512 ValueShip™ Eligible
For: Mercruiser GM 4 Cylinder 181cu.in. (Models:120, 140, 2.5L, 3.0L), GM Inline 6 Cylinder 250-292cu.in. (Models: 165 and 200), Ford Small Block V8 302-351cu.in. (Models: 215, 225, 233, 255, 888), GM Small Block V8 305, 350cu.in. (Models: 198, 228, 898)

Used with:
    Front Plate: 18-4009
    Rear Plate: 18-1912
Includes 18-2832 gasket
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Part # 18-8549 ValueShip™ Eligible
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Includes only Hardware for 18-1955-1 Manifold
Your Price: $15.95
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Part # 18-8551 ValueShip™ Eligible
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Fits 18-1975 Exhaust Elbow
Your Price: $3.99
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Part # 18-2833-9 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 27-99777-2
Package of 2
Use with Elbows: 18-1971, 18-1978 & 18-1972. Included in 18-4362 mounting kit
Your Price: $1.68
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(33% Off $2.53)
Part # 18-0356 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 27-64692
For Rochester Carbs
Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
Your Price: $3.27
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Part # 18-2819-9 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 27-39915
Package of 2
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Part # T-20971 ValueShip™ Eligible
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Mercruiser Riser, 3" exhaust outlet, 90° down angel.


Replaces OEM #:

  • Mercruiser 76351
  • Mercruiser 60426
  • Mercruiser 49964

For use in most inboard/outboard applications.


Engine Type:
GM In-Line Six Cylinder 250 and 292 cu.in.GM Small Block V8 305-350 cu.in.


Engine Model:
165 and 200198, 228 and 898

Your Price: $158.93
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Part # T-20974 ValueShip™ Eligible
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Mercury Riser, 3" 0° (3" O.D. Riser)


Replaces OEM #:

  • Mercury Marine 98502A2

Engine Type:

GM V6 229 and 262 cu.in.GM Small Block V8 305-350 cu.in.GM Big Block V8 454 cu.in.


Engine Model:
185 and 205200, 228, 230, 260 and 898330, 340 and 7.4L

Your Price: $93.37 (Out of stock)
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Part # T-20976 ValueShip™ Eligible
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Riser, 4" exhaust outlet, 7° down angle. For late model inboard/outboard and inboards.

Replaces OEM #:

  • Mercruiser 44354
  • Mercruiser 807914
  • Mercruiser 807988

Fits Engine Type:

GM V6 229 and 262 cu.in.GM Small Bolck V8 305-350 cu.in.GM Big Block V8 454 cu.in.

Engine Model

185 and 205200, 228, 230, 260 and 898330, 340 and 7.4L

(Out Of Stock)
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Your Price: $175.18
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Part # T-20978 ValueShip™ Eligible
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Mercruiser Riser, 3" exhaust outlet, 0° down angle


Replaces OEM #:

  • Mercruiser 76771
  • Mercruiser 60427

For use in most inboard applications.


Engine Type:
GM In-Line Six Cylinder 250 cu.in.GM In-Line Six Cylinder 250 and 292 cu.in.GM Small Block V8 305-350 cu.in.


Engine Model:
165 Equipped with Mercruiser riser #'s 76351, 76325, 60426, 49964, 76771 or 60427165 and 200198, 228 and 898

Merc Thermostat Gasket
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Part # 540-26
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    Mercury:
  • 27-812867 1