Allstar Performance Holley 4500 Open Carb Spacer - 1/2" Thick 23-TR1-N-M no more risking pump failure

no more risking pump failure in a 1

2000-2011 Chevrolet Suburban 2500

Complete with nylon pack and pilot chute

EFI Adjustable Regulator

1990-1994 Plymouth Sundance

Allstar Performance Holley 4500 Open Carb Spacer - 1/2" Thick 23-TR1-N-M no more risking pump failureSpecially designed for drag race applications to isolate carburetor from manifold, spacers prevent horsepower robbing heat transfer and increase the distance from the bottom of the carburetor to the manifold plenum for better air flow. Spacers are CNC machined in the U. S. from a polymer compound able to withstand temperatures up to 400F. Available in open or four hole versions for 4150 and 4500 series Holley and Holley style carburetors in 1 2", 1",