Carburetor Spacer Kit 2i n Open Port with Gaskets

The Specialty Products Company Carburetor Spacer Kit 2 in Open Port with Gaskets (part number 9137) is a precision adapter designed to match Carter AFB carburetors to square bore manifolds on marine and automotive engines. This phenolic spacer delivers the correct air gap between carburetor and intake manifold while maintaining fuel atomization and throttle response critical to reliable boating performance.

The 2-inch thickness specification positions the carburetor at an optimal distance from the manifold, improving fuel distribution and reducing heat transfer from the engine block to the carburetor itself—a key concern in marine service where consistent jetting is essential. Phenolic construction resists thermal conductivity better than aluminum, keeping fuel temperature stable during sustained cruising. The open port design maintains full flow capacity without restriction. Gaskets and mounting hardware are included, eliminating the need to source additional sealing components.

This spacer kit suits engine builders, marine mechanics, and serious recreational boaters restoring or tuning vintage small-block powerplants. Whether upgrading a fishing vessel's carburetor setup for better fuel economy or installing a period-correct Carter on a restored marine engine, the SPC 9137 ensures proper adapter fitment and reliable sealing. Weighing 1.69 lbs and measuring 7.3 x 2.7 x 7.4 inches, it integrates cleanly into tight engine compartments typical of modern and classic marine installations.