Seller notes

On engines mounted close to the transom or waterline, 3 inches can be a significant difference in preventing back-flow. These SPACER-RISER MANIFOLD KITS give you the extra lift you need to keep the water out of the riser when throttling down while providing additional space for exhaust line routing. It is a high-quality component designed to work with various GM V-6, small block, and big block engines. Key Features: The parts are ready to use right away. It provides height for hose clearance, ri...

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