Allstar Performance Holley 4500 4-Hole Carb Spacer - 1" Thick Nitrile O-Ring see the H/O Fuel Pump

see the H/O Fuel Pump

2008-2008 Hummer H2

integration is sleek and seamless

7L coverage pending

12 AN Hose to 7/8 in NPT Male O-Ring

Allstar Performance Holley 4500 4-Hole Carb Spacer - 1" Thick Nitrile O-Ring see the H/O Fuel PumpSpecially 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",