911 Valve Adjusting Screw - Swivel Foot Style

911 valve adjuster, German. 911 adjusters have been used in performance engines since the days of Gene Berg. A must for any performance engine, and an excellent upgrade for stock engines. These valve adjusters allow more precise adjustments and are especially needed when running high lift camshafts or ratio rockers. 8mm x 1.0 thread. NOTE: These adjusting screws may require a modification to the rocker arms. Set of 8. Do not use these on an engine with hydraulic cam followers. Available singly or in a kit of 8.