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MERCRUISER

Cooling System

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 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

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 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.

657