Complete Mercruiser V-8 GM 454/502 manifold Set with 4 inch risers and 3 inch spacer

Model: GLM-58244

Replacement 454 Chevy Mercruiser Exhaust Manifold Set with 4 inch risers and 3 inch spacers

Big Block Manifold Sets with 4 inch Risers - With 3 inch Spacer

For Mercruiser GM V8 454 Big Block Raw/Fresh Water Cooling System

Set includes two Manifolds, two 4 inch Risers, two 3 inch Spacers, Studs and Gaskets