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

Features:
*Allows the Holley #R4412 2bbl carb to be mounted on 4bbl manifolds that have the standard Holley bolt pattern
*Made In USA
*Adapter features an open design and is adjustable front to rear for fine tuning
*Includes all necessary hardware and has threads that are Heli-coiled

 *Warning: This Product can expose you to Formaldehyde, which is known to the state of California to cause cancer and/or birth defects. For more information visit https://www.p65warnings.ca.gov/