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.

1/2" Thick phenolic spacer mounts between the EGR spacer plate and the upper intake of a Ford V-8 5.0L engine. Limits heat transfer and improves airflow to increase performance. It has a EGR gas through hole, which will eliminate the need to modify the EGR system. Being 1/2" thick, it allows the use of all stock linkage and air intake systems. Can be used with aftermarket intakes where the openings are not more than 65mm. Includes all needed gaskets and hardware.

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

1" Thick 4-hole aluminum spacer for Holley 4150/4160 600+ CFM carbs.

1" Thick open aluminum spacer for Holley 4150/4160.

1" Thick Q-Jet Aluminum spacer. NOTE: Mounting Studs Will Work With Spreadbores But NOT With Q-Jets.

1" Thick Q-Jet Aluminum spacer. NOTE: Mounting Studs Will Work With Spreadbores But NOT With Q-

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.

1" Thick blended spacer for Holley 4150/4160.

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.

1" Thick blended spacer for Holley 4500.

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.

3/8" Thick phenolic spacer mounts between the upper and lower intake of a Ford V-8 4.6L 2 valve engine. Limits heat transfer and improves airflow to increase performance. There is no interference with the stock linkage and hood. Includes a factory gasket.

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.

This dragster scoop mount provides an easy way to mount a scoop in applications using Holley 4500 carburetors. It is designed to be used with scoops with a base mesurement of 22” x 13-3/4” Constructed using .100” tig welded aluminum.

1" Thick blended spacer for Holley 4150/4160. Features: * Precision Machined From Aluminum * Blended Design Combines the benefits of the 4-hole and open spacer design. * Comes pre drilled with dowel pin holes for lining up carburetor and manifold

2" Thick blended spacer for Holley 4150/4160. Features: * Precision Machined From Aluminum * Blended Design Combines the benefits of the 4-hole and open spacer design. * Comes pre drilled with dowel pin holes for lining up carburetor and manifold