Page 811 - 2021 Sierra Catalog

Item No. Description OE No. Application
1 18-1953-2 MANIFOLD 87114A19
GM Small Block (V8) 305-350 cu.in. Models 200, 228, 230, 260, & 898
2 18-0897 ELBOW GASKET (RESTRICTOR) 27-41813
Fits Manifold: 18-1953-2; Manifold Spacers: 18-1985, & 18-1908; Elbows: 18-1970-2, 18-1976-2, 18-1974-1
3 18-2849-1 ELBOW GASKET (OPEN) 27-818832
Fits Manifold: 18-1953-2; Manifold Spacers: 18-1985, & 18-1908; Elbows: 18-1970-2, 18-1976-2, 18-1974-1
4 18-2949 MANIFOLD GASKET 96306 Use with Manifold: 18-1953-2. Included in 18-8520 mounting kit.
5 NSS MOUNTING BOLT N/A Included in 18-8520 mounting kit
6 18-8216 HOSE FITTING 22-36305 3/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
7 18-4461 HOSE FITTING N/A 3/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
8 18-8215 HOSE FITTING N/A 3/4" - 14NPT X 3/4" Hose (Corrosion Resistant Brass Fitting)
9 18-8520 MOUNTING KIT N/A Use with Manifold: 18-1953-2. Includes 18-2949 manifold gasket.
10 18-8505 MOUNTING KIT N/A Use with Riser: 18-1976-2. Includes 18-0897 elbow gasket.
11 18-8529 MOUNTING KIT N/A
Use with Risers: 18-1970-2, 18-1974-1. Includes 18-0897 elbow gaskets
12 18-1908 MANIFOLD SPACER 933220A12
3" Spacer for Manifold: 18-1953-2. Use with mounting kit 18-8554 with 18-1970-2, or mounting kit 18-8555 with 18-1976-2.
13 18-1985 MANIFOLD SPACER 93322
6" Spacer for Manifold: 18-1953-2. Use with mounting kit 18-8556. (Note to mount elbows to spacer a separate mounting kit is required)
14 18-1974-1 MANIFOLD ELBOW 98502A2 Fits Manifold: 18-1953-2. Use Elbow gasket: 18-2849-1, 18-0897, or (3” hose • 0° down angle) 18-0672; Use mounting kit: 18-8529. (Do not use with spacer)
15 NSS MOUNTING STUD N/A Included in 18-8529 mounting kit.
16 NSS MOUNTING BOLT N/A Included in 18-8505 mounting kit.
MANIFOLD ELBOW Fits Manifold: 18-1953-2. Use Elbow gasket: 18-2849-1, 18-0897, 17 18-1976-2 (4” hose • 7° down angle) 44354A3, 807914A1 or 18-0672; Use mounting kit: 18-8505, or if spacer is included use
18-8555.
18 18-0672 ELBOW GASKET (CLOSED) 27-860231
Fits Manifold: 18-1953-2; Manifold Spacers: 18-1985, & 18-1908; Elbows: 18-1970-2, 18-1976-2, 18-1974-1
MANIFOLD ELBOW Fits Manifold: 18-1953-2. Use Elbow gasket: 18-2849-1, 18-0897, 19 18-1970-2 (3” hose • 15° down angle) 98504A3 or 18-0672; Use mounting kit: 18-8529, or if spacer is included use
18-8554.
Use with Manifold Spacer: 18-1985. Includes 18-0897 & 18-2849- 20 18-8556 MOUNTING KIT N/A 1. (Note: To mount elbows to spacer a separate mounting kit is
required)
21 18-8555 MOUNTING KIT N/A
Use with Riser Kit 18-1908K: Spacer 18-1908: Riser 18-1976-2: Manifold: 18-1953-1
22 18-8554 MOUNTING KIT N/A
Use with Riser Kit 18-1908K: Spacer 18-1908: Riser 18-1970-2: Manifold: 18-1952-1
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