Holley Secondary Metering Block - Chromate - Holley 4160 Carburetors 34-6 SR71050H Proprietary precision injected polymer design

Proprietary precision injected polymer design offers light weight

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Rack and Pinion Bushing

and graphics

The main-body also features an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship as well as an extended air cleaner flange for easy air scoop attachment when using the available air scoop adapter

Holley Secondary Metering Block - Chromate - Holley 4160 Carburetors 34-6 SR71050H Proprietary precision injected polymer designHolley Metering Block 34 6 Standard Finish (0 1850C S) Or Most Any Model 4160 w Side Hung Float Bowl Metering Block Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as