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Sierra Marine Parts Catalog: Mercruiser

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Item No
Description
OE No.
Application
1
18-1954-1
MANIFOLD
9582A5
Fits 2.5 & 3.0L 181 CID, Model 140 with Rochester carburetor
w/ electrical choke (1983-89). Use with Manifold Gasket: 18-1204.
2
18-1955-1
MANIFOLD
96705A1
Fits 3.0L 181 CID, Model 140 with Rochester carburetor w/
mechanical choke (1968-82). Use with Manifold Gasket: 18-1204.
Mounting Hardware: 18-8549.
3
18-1956-1
MANIFOLD
99798A18
Fits 3.0L 181 CID, Model 140 & 3.0 with Mercarb carburetor w/
electrical choke (1983-95). Use with Manifold Gasket: 18-1204.
4
18-1204
MANIFOLD GASKET
27-96429
Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
5
18-2832
FRONT/ END CAP GASKET 27-48043-1
Fits Port & Starboard Caps of Manifolds: 18-1954-1, 18-1955-1,
18-1956-1.
6
18-4009
FRONT PLATE
60252A2
Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
7
18-5021
END PLATE
805629
Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
8
NSS
MOUNTING BOLT
N/A
Included in 18-8512 mounting kit.
9
18-2748
EXHAUST BOOT
32-44348T
4" Inside Diameter. Use with 18-1975-1 elbow.
10 18-1971
MANIFOLD ELBOW
76351A2
Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow
Gasket 18-2833; Mounting Kit 18-4362
11 18-1978
MANIFOLD ELBOW
76771A3
Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow
Gasket 18-2833; Mounting Kit 18-4362
12 18-1973
MANIFOLD ELBOW
55538A2
Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow
Gasket 18-2833; Mounting Kit 18-8508
13 18-1975-1
MANIFOLD RISER
12076A2
Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1; Elbow
Gasket 18-2819; Mounting Hardware 18-8551: Exhaust Boot 18-2748.
14 NSS
MOUNTING BOLT
N/A
Included in 18-8551 mounting hardware.
15 18-3233
MOUNTING STUD
N/A
3/8-24, 3/8-16 X 1 3/4. Included in 18-4362 mounting kit.
16 NSS
MOUNTING BOLT
N/A
Included in 18-8508 mounting kit.
17 NSS
MOUNTING BOLT
N/A
Included in 18-8549 mounting kit.
18 18-4362
MOUNTING KIT
N/A
Use with Elbows: 18-1971 & 18-1978. Includes 18-2833 elbow
gasket.
19 18-8512
MOUNTING KIT
N/A
Use with Front Plate: 18-4009 & End Plate (NSS). Includes
18-2832 front/end cap gasket.
20 18-8549
HARDWARE KIT
N/A
Includes only hardware for 18-1955-1 manifold.
21 18-8551
HARDWARE KIT
N/A
Includes only hardware for 18-1975-1 elbow.
22 18-8508
MOUNTING KIT
N/A
Use with Elbow 18-1973. Includes 18-2819 elbow gasket.
23 18-2833
ELBOW GASKET
27-99777-2
Use with Elbows: 18-1971 & 18-1978. Included in 18-4362
mounting kit.
24 18-0356
CARBURETOR GASKET
27-64692
Fits Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
25 18-2819
ELBOW GASKET
27-39915
Use with Elbow: 18-1973. Included in 18-8508 mounting kit.
661