501 Series Performance Heads 44 by 37.5 Valves, Pair Web-Cam The head has 2 smog

The head has 2 smog holes and is tapped for the head temp sensor

& 3 Early 66 & Down

and Single high rev springs

Made in USA

This wheel is 4 on 130 wide VW lug pattern

501 Series Performance Heads 44 by 37.5 Valves, Pair Web-Cam The head has 2 smogThis is a brand new Set of 501 High Performance Cylinder Heads for a VW Type 1 2 or 3 Dual Port. Heads comes with Stainless Steel 44mm Intake and a Stainless Steel 37. 5mm Exhaust Valves, with Harden Keepers, Chromoly retainers, and Single high rev springs. They areready to install. The 501 Series Castings come STD with: Increasedmaterialat the intakesurfacegivingyou theabilityto make much bigger ports. Amodernized Combustionchamber, for increased