Moroso 4412 2BBL to 4150/4160 Carburetor Adapter - 1in - Billet Aluminum

If you're looking to swap a larger 4150 or 4160 style carburetor onto an engine originally set up for a 2-barrel (2BBL) manifold, this adapter from Moroso is what you need. It bridges the gap, allowing that bigger carb to bolt right up to your existing 2BBL intake. This is a common upgrade for tuners wanting more fuel and air delivery for improved performance.

This adapter is machined from a solid block of billet aluminum, making it strong and lightweight. It measures 1 inch thick, which can help with hood clearance issues or provide a bit of extra plenum volume. The precise machining ensures a good seal between the carburetor base and the manifold flange, preventing vacuum leaks that can cause drivability problems.