Review on ✨ Canton Racing Phenolic Carburetor Spacer for Holley 4150/4160 (1/4"), 1 Pack - Boost Performance! by Anatoly Yorgason

Good workmanship, symmetrical tight fit on square bore manifold. Used with the Holley 4160 carburetor to maintain proper throttle clearance on the stock Mopar 67 440HP manifold. I also vouch that it helps reduce heat transfer and minimize vapor lock. The 4-hole spacer ring is said to have helped reduce engine power at low rpm and eliminate stumble at idle - and it did just that for my application.