Page 800 - 2021 Sierra Catalog

Item No. Description OE No. Application
1
18-1957-2 MANIFOLD 807078T08, 807078Q07 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 (blocked) ELBOW GASKET (Blocked) 27-860231 Fits Manifold: 18-1957-2; Elbows: 18-1970-2, & 18-1976- 2, 18-1974: Spacer 18-1908
3
18-2849-1 ELBOW GASKET (Open) 27-818832 Fits Manifold: 18-1957-2; Elbows: 18-1970-2, & 18-1976- 2, 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 (3” hose • 15° down angle) 98502A2
Fits Manifold: 18-1957-2. Use Elbow gaskets: 18-2849-1, 18-0897, or 18-0672; Use mounting kit: 18-8529 (Do not use with spacer)
9
18-1976-2 MANIFOLD ELBOW (4” hose • 7° down angle) 44354A3
Fits Manifold: 18-1957-2. Use Elbow gaskets: 18-2849-1, 18-0897, or 18-0672; Use mounting kit: 18-8505, or if spacer is included use 18-8555
10
18-1970-2 MANIFOLD ELBOW (3" hose) 98504A3
Fits Manifold: 18-1957-2. Use Elbow gaskets: 18-2849-1, 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, 93320A5
3" Riser Kit for Manifold: 18-1957-2. Includes (2) spacers, restrictor, open, & blocked gasket. All necessary mount- ing hardware is also included
15
18-8554 MOUNTING KIT N/A Use 18-8554 Mounting Kit when 18-1908 Spacer, 18- 1970-2 Elbow and 18-1974 Elbow are used together.
Included in 18-1908K. Includes (1) 18-2849-1 & 18-0897 elbow gaskets
16
18-8555 MOUNTING KIT N/A
Use with Manifold Spacer: 18-1908 with Riser 18-1976-2. Included in 18-1908K. Includes (1) 18-2849-1 & 18-0897 elbow gaskets.
17
18-8556 MOUNTING KIT N/A Use with Manifold Spacer: 18-1985. Includes (1) 18- 2849-1 & 18-0897 elbow gaskets
18
18-8505 MOUNTING KIT N/A Use with Riser: 18-1976-2. Includes 18-0897 elbow gasket
19
18-8529 MOUNTING KIT N/A Use with Risers: 18-1970-2 & 18-1974-1. Includes 18- 0897 elbow gasket
20
18-8532 MOUNTING KIT N/A Use with Manifold: 18-1957-2. Includes 18-0418 manifold gasket
21
18-0418 MANIFOLD GASKET 96653 / 27-41813 Use with Manifold: 18-1957-2. Included in 18-8532 mounting kit.
22
18-0897 ELBOW GASKET (Restrictor) 27-41813 Fits Manifold: 18-1957-2; Manifold Spacers: 18-1985, & 18-1908; Elbows: 18-1970-2, & 18-1976-2, 18-1974
23
18-1908 MANIFOLD SPACER 93322A12
3" Spacer for Manifold: 18-1952-1. Use with mounting kit 18-8556 (Note: To mount elbows to spacer a separate mounting kit is needed)
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I/O — MERCRUISER - Cooling System