The Holley 112-121 is a complete throttle base plate assembly for Model 4150 carburetors, specified for list numbers 0-80541-1 and 0-80528-1. Cast from aluminum and pre-assembled with a new throttle shaft, throttle blades, and linkage, it restores crisp throttle response and proper sealing on a carburetor with a worn shaft or a base plate damaged by a broken mounting ear.

Holley 112-121 Features:

• Replacement throttle base plate assembly for Model 4150 carburetors
• Fits Holley list numbers 0-80541-1 and 0-80528-1
• Includes new throttle shaft, blades, and linkage
• Cast aluminum; bolts on without modification
• Sold individually