The Holley 134-68 is a direct-replacement metering block for the Model 4150 carburetor, list number 0-80541-1. The metering block houses the main and idle fuel circuits, jets, and power valve, and is a common service item when a warped or corroded block causes tuning inconsistencies or external fuel leaks. This exact replacement installs without modification to restore proper fuel metering.

Holley 134-68 Features:

• Direct replacement metering block for carburetor list 0-80541-1
• Compatible with Holley Model 4150 four-barrel carburetors
• Accepts standard Holley jets and power valve
• Installs without modification to the carburetor body
• Sold individually