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Sierra Marine Parts Catalog: Mercruiser

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Item No
Description
OE No.
Application
1
18-1957-1
MANIFOLD
807078A6
GM Big Block (V8) 454 cu.in. Models 330, 340 & 7.4L. Use with
18-0418 manifold gasket; Mounting Kit: 18-8532
2
18-0672
ELBOW GASKET
27-860231
Fits Manifold: 18-1957-1; Elbows: 18-1970-1, & 18-1976-1, 18-1974:
(BLOCKED)
Spacer 18-1908.
3
18-2849
ELBOW GASKET (OPEN)
27-818832
Fits Manifold: 18-1957-1; Elbows: 18-1970-1, & 18-1976-1, 18-1974:
Spacer 18-1908.
4
NSS
MOUNTING STUD
N/A
Included in 18-8554 mounting kit.
5
NSS
MOUNTING STUD
N/A
Included in 18-8529 mounting kit.
6
NSS
MOUNTING BOLT
N/A
Included in 18-8505 mounting kit.
7
NSS
MOUNTING BOLT
N/A
Included in 18-8532 mounting kit.
8
18-1974-1
MANIFOLD ELBOW
98502A2
Fits Manifold: 18-1957-1. Use Elbow gaskets: 18-2849, 18-0897,
or 18-0672; Use mounting kit: 18-8529 (Do not use with spacer)
9
18-1976-1
MANIFOLD ELBOW
44354A3
Fits Manifold: 18-1957-1. Use Elbow gaskets: 18-2849, 18-0897,
or 18-0672; Use mounting kit: 18-8505, or if spacer is included
use
18-8555
10 18-1970-1
MANIFOLD ELBOW
98504A3
Fits Manifold: 18-1957-1. Use Elbow gaskets: 18-2849, 18-0897,
or 18-0672; Use mounting kit: 18-8529, or if spacer is included
use 18-8554.
11 18-8216
HOSE FITTING
N/A
3/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
12 18-4461
HOSE FITTING
N/A
3/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
13 18-8215
HOSE FITTING
N/A
3/4" - 14NPT X 3/4" Hose (Corrosion Resistant Brass Fitting)
14 18-1908K
MANIFOLD SPACER KIT
807476A6,
3" Riser Kit for Manifold: 18-1957-1. Includes (2) spacers,
93320A5
restrictor, open, & blocked gasket. All necessary mounting
hardware is also included.
15 18-8554
MOUNTING KIT
N/A
Use 18-8554 Mounting Kit when 18-1908 Spacer, 18-1970-1 Elbow
and 18-1974 Elbow are used together. Included in 18-1908K.
Includes (1) 18-2849 & 18-0897 elbow gaskets.
16 18-8555
MOUNTING KIT
N/A
Use with Manifold Spacer: 18-1908 with Riser 18-1976-1. Included
in 18-1908K. Includes (1) 18-2849 & 18-0897 elbow gaskets.
17 18-8556
MOUNTING KIT
N/A
Use with Manifold Spacer: 18-1985. Includes (1) 18-2849 & 18-0897
elbow gaskets
18 18-8505
MOUNTING KIT
N/A
Use with Riser: 18-1976-1. Includes 18-0897 elbow gasket.
19 18-8529
MOUNTING KIT
N/A
Use with Risers: 18-1970-1 & 18-1974-1. Includes 18-0897
elbow gasket.
20 18-8532
MOUNTING KIT
N/A
Use with Manifold: 18-1957-1. Includes 18-0418 manifold gasket.
21 18-0418
MANIFOLD GASKET
96653 /
Use with Manifold: 18-1957-1. Included in 18-8532 mounting kit.
27-46820
22 18-0897
ELBOW GASKET
27-41813
Fits Manifold: 18-1957-1; Manifold Spacers: 18-1985, & 18-1908;
(RESTRICTOR)
Elbows: 18-1970-1, & 18-1976-1, 18-1974
23 18-1908
MANIFOLD SPACER
93322A12
3" Spacer for Manifold: 18-1952-1. Use with mounting kit 18-8556.
651
(Note: To mount elbows to spacer a separate mounting kit is needed)