For sale is an NOS AC DELCO fuel pump 40373. This fuel pump is correct for 1966 Pontiac/GTO models with V8 engines, including 326, 389, and 421. The other part number for this fuel pump is GM 6416732. It is a vintage part that is brand new in the original box and has never been used. It has the correct raised AC logo on both sides of the pump, and the part number is stamped in the mounting flange.This fuel pump is perfect for restoring your classic Pontiac or GTO to its former glory.