If you've built around a 390
Apply recommended sealant (no gasket required)
Items shown in images for reference purposes only
Higher fuel flow capacity - Supports modified V8 power levels
Fuel Pump Block Off Plate Finned Fits Buick Oldsmobile 322,324,364,401,425 USA air cleaner lid If you've built around aFuel Pump Block Off Plate fits Buick and Oldsmobile 322, 324, 364, 401, 425 Engines CNC From 6061 Billet Aluminum Made in the USA Our fuel pump block off plate is a must have to cover the mounting hole and prevent oil leaks in your engine when upgrading your fuel system from the stock mechanical fuel pump to a more reliable electric fuel pump. This high quality block off plate is a perfect fit for your Buick and Oldsmobile 322, 324, 364, 401, 425