Mercruiser 229 and 262 ci V6, 305 and 350 SB V8, 454 Big Block V8.
Riser Kit: 18-1908K and 18-1908 Spacer
Riser: 18-1970-1, 18-1971, 18-1978
Manifold Spacer: 18-1906
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
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