This is a 1" thick spacer for Holley 2BBL carbs with matching intakes.

This 1" Phenolic adapter allows the Holley 2BBL carb #R4412 to be installed on a stock GM 2 bbl intake manifold. It comes with all necessary hardware and has Heli-coiled threads.

This 1" Phenolic adapter allows the #R4412 2BBL carb to be mounted on 4BBL manifolds having the standard Holley bolt pattern. This can also be used with the Edelbrock 4BBL Performer intake. This adapter is designed to position the carb to deliver the best performance and is non-adjustable. DEVELOPED BY CARL McQUILLEN

This 1" aluminum adapter allows the #R4412 2BBL carb to be mounted on 4bbl manifolds having the standard Holley bolt pattern. This can also be used with the Edelbrock 4BBL Performer intake. This adapter is designed to position the carb to deliver the best performance and is non-adjustable. This is the same as our #85-065 but machined from aluminum.

This 1" Phenolic adapter that allows the Holley #R4412 2BBL carb to be mounted on 4BBL manifolds that have the standard Holley bolt pattern. These spacers are adjustable front to rear for fine tuning. Comes with all necessary hardware and has threads that are Heli-coiled.

This 1" Phenolic adapter allows the Holley R4412 2BBL carb to be mounted on the Q-Jet manifold 4BBL manifold. The mounting holes are slotted allowing front to rear adjustment for fine tuning. Comes with all necessary hardware and the threads are Heli-coiled.

This 1" Phenolic adapter that allows the Holley #R4412 2BBL carb to be mounted on 4BBL manifolds that have the standard Holley bolt pattern. These spacers are adjustable front to rear for fine tuning. Comes with all necessary hardware and has threads that are Heli-coiled.

This 1" Phenolic adapter allows the Holley 500 carburetor to be installed on a stock Ford 2300 intake manifold when the EFI manifold is removed. Built from phenolic it provides the extra benefit of creating a heat barrior between the carburetor and the manifold.