The Holley 134-9 is a secondary metering plate for Model 4160 carburetors, which use a metering plate rather than a full metering block on the secondary side. It is drilled with a 0.067 in. main hole and a 0.031 in. idle hole to set the secondary fuel calibration, and a mounting gasket is included. It installs as an exact replacement with no modifications required.

Holley 134-9 Technical Specifications:

• Secondary metering plate for Model 4160 carburetors
• 0.067 in. main metering hole
• 0.031 in. idle hole
• Cast aluminum with mounting gasket included
• Sold individually