This item is for a brand new high performance 650-750cfm carburetor base plate. 4150 carburetor Complete Baseplate Assembly Compatible With Holley 4150 models Carburetor For 650CFM and 750CFM Replacement For AED 6460 Or Holley 112-116 carburetor Throttle Base Plate . Package Incloded a throttel Baseplate, and 2 gasket Replace your worn-out or broken throttle base plate with one of these replacement throttle base plates. They Throttle Base Plates 112-116 are manufactured from high-quality cast aluminum and bolt on easily with no modifications. Replacement For Holley throttle base plates include a new throttle shaft assembly, throttle blades, and throttle linkage. If you've broken off an ear on your base plate, don't worry--just pick up one of these Throttle Base Plates 112-116 replacement throttle base plates to solve the problem.