Holley Air Cleaner Spacer 1-3/8" PXP RaceWear AFR valve guides are constructed

AFR valve guides are constructed from high-quality bronze for durability and wear

610" OD and fit applications with 11/32" valves and

Built-in adjustable rev limiter in 100 RPM incrementsfrom 3100-9900 RPM

Fits MD3 EVO2 nose perfectly

9mm Breather

Holley Air Cleaner Spacer 1-3/8" PXP RaceWear AFR valve guides are constructedProvides extra clearance for throttle linkage, etc. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps,