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.
Average Customer Review for Exhaust Manifold - Sierra
Based On 1 Review
make sure you order the right manifold by Timothy - Port Townsend, WashingtonOctober 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.
(1 of 1 people found this review helpful)
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Average Customer Review for End Cap Gasket - Sierra
Based On 1 Review
gasket by Ron - Bellflower, CaliforniaMay 30, 2011
perfect fit works great
(0 of 1 people found this review helpful)
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EXCELLENT AFTERMARKET PART by James - Hamptonville, North CarolinaSeptember 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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Average Customer Review for Exhaust Manifold Elbow Riser - Sierra
Based On 1 Review
Exhaust Manifold Elbow Riser - Sierra by William - Poquoson, VirginiaMay 11, 2012
Perfect fit and with everything I needed included, it installed in minutes.
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Review for Exhaust Manifold Elbow Mounting Package for Mercruiser, Barr MC20-60426P, GLM 5 by a CustomerMay 28, 2009

(1 of 2 people found this review helpful)
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Based On 1 Review
Review for Sierra 18-8512 Exhaust Elbow Mounting Kit by a CustomerMay 28, 2009

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Average Customer Review for Exhaust Manifold Elbow Gasket - Sierra
Based On 6 Reviews
Fits by Adam - Bowling Green, KentuckyMarch 03, 2014
Fits, that all that's required. Does the job.
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always nice parts by Jay - Victor, MontanaOctober 06, 2013
great fitting as usual. Thanks for the great service .Jay
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Good by Zach - West Valley, UtahSeptember 07, 2012
This worked on my engine perfectly. I have a 1974 Mercruiser with a 302 Ford in it.
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Product was fine, severe shipping issues by Mike - Lumberton, North CarolinaMay 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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exhaust gasket by Ron - Bellflower, CaliforniaMay 30, 2011
fixed our problem. thanks
(0 of 1 people found this review helpful)
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Based On 1 Review
Carburetor Gasket for Mercruiser by James - Rochester, New YorkAugust 01, 2013
It works!
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Mercury Marine 95862A5 replacement parts
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Exhaust Manifold - Sierra
Your Price: $491.99
Part # 18-1954-1
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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

Mercury Marine 96705A1 replacement parts
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Exhaust Manifold for Mercruiser 96705A1, GLM 51212 - Sierra
Your Price: $384.99
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(7% Off $414.00)
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

Mercury Marine 99798A18 replacement parts
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Exhaust Manifold - Sierra
Your Price: $338.99
Save: $100.50
(22% Off $439.49)
Part # 18-1956-1
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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

GLM 33570 replacement parts
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Exhaust Manifold Gasket - Sierra
Your Price: $21.99
Save: $3.05
(12% Off $25.04)
Part # 18-1204-9
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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

GLM 31490 replacement parts
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End Cap Gasket - Sierra
Your Price: $5.99
Save: $0.83
(12% Off $6.82)
Part # 18-2832-9
SHIPS TOMORROW!* if ordered in 20 hrs 13 mins.

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

GLM 51010 replacement parts
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Exhaust Manifold End Plate - Sierra
Your Price: $68.99
Save: $12.50
(15% Off $81.49)
Part # 18-4009
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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

Exhaust Manifold End Plate for Mercruiser - Sierra
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Part # 18-5021
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Replaces: Mercruiser 805629

Use with:

    Manifold: 18-1954-1,18-1955-1,18-1956-1

Mercury Marine 32-44348T replacement parts
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Exhaust Boot - Sierra
Your Price: $28.99
Save: $22.40
(43% Off $51.39)
Part # 18-2748
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Replaces OEM part #

  • MERCURY MARINE 32-44348T
4" Inside Diameter

GLM 51120 replacement parts
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Part # 18-1971
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Replaces OEM part #

  • MERCURY MARINE 76351A2
  • 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

Mercury Marine 76771A2 replacement parts
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Exhaust Manifold Elbow - Sierra
Your Price: $258.99
Save: $65.01
(20% Off $324.00)
Part # 18-1978
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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

BARR MC-20-55538 replacement parts
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Exhaust Manifold Elbow for Mercruiser 55538A2, Barr MC-20-55538 - Sierra
Your Price: $154.99
Save: $47.03
(23% Off $202.02)
Part # 18-1973
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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

Mercruiser Exhaust Manifold Risers
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Exhaust Manifold Elbow Riser - Sierra
Your Price: $185.99
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Part # 18-1975-1
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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

BARR MC2060426P replacement parts
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Part # 18-4362
SHIPS TOMORROW!* if ordered in 20 hrs 13 mins.

Replaces OEM part #

  • BARR MC20-60426P
Use with:
    Elbow: 18-1971 & 18-1978
Includes 18-2833 elbow gasket

Exhaust Manifold Elbow Mounting Kit - Sierra

Exhaust Manifold Elbow Mounting Kit - Sierra
Your Price: $9.99
Save: $1.89
(15% Off $11.88)
Part # 18-8512
SHIPS TOMORROW!* if ordered in 20 hrs 13 mins.

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

Exhaust Manifold Mounting Kit - Sierra
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Part # 18-8549
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Includes only Hardware for 18-1955-1 Manifold

Exhaust Manifold Elbow Mounting Kit - Sierra
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Exhaust Manifold Elbow Mounting Kit - Sierra
Your Price: $14.99
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(19% Off $18.56)
Part # 18-8551
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Hurry! Only 1 left in stock
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Fits 18-1975 Exhaust Elbow

Mercury Marine 27-99777 2 replacement parts
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Exhaust Manifold Elbow Gasket - Sierra
Your Price: $3.99
Save: $0.83
(17% Off $4.82)
Part # 18-2833-9
SHIPS TOMORROW!* if ordered in 20 hrs 13 mins.

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

Mercury Marine 27-64692 replacement parts
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Carburetor Gasket for Mercruiser 27-64692, GLM 31660 - Sierra
Your Price: $1.99
Save: $0.46
(18% Off $2.45)
Part # 18-0356
SHIPS TOMORROW!* if ordered in 20 hrs 13 mins.

Replaces OEM part #

  • MERCURY MARINE 27-64692
For Rochester Carbs
Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1

Exhaust Manifold Elbow Gasket - Sierra
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Exhaust Manifold Elbow Gasket - Sierra
Your Price: $3.99
Save: $0.77
(16% Off $4.76)
Part # 18-2819-9
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Replaces OEM part #

  • MERCURY MARINE 27-39915
Package of 2

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Mercruiser Elbow - H20 Manifolds
Your Price: $239.56
Part # T-20971
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Replaces:

  • Mercruiser#'s 76351, 60426 and 49964

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Mercury Marine Elbow - H20 Manifolds
Your Price: $441.43 (Out of stock)
Part # T-20974
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Replaces:

  • Mercury Marine 98502A2

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Mercruiser Elbow - H20 Manifolds
Your Price: $226.80
Part # T-20976
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Replaces:

  • Mercruiser # 44354, 807914 and 807988

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Mercruiser Elbow - H20 Manifolds
Your Price: $462.86
Part # T-20978
SHIPS TOMORROW!* if ordered in 20 hrs 13 mins.
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Replaces:

  • Mercruiser #'s 76771 and 60427.

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Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!