20R/22R/RE/RET Rocker Arm Shim (.030" / .060") 0 Rocker Arm Shim (.030″ / .060") Have you ever checked your rocker arm alignment to see if it rides completely on the cam lobe? You are not alone; most people don't check it either!! As parts wear or even get replaced the rocker arm alignment can... $0.50 Quick view Add Wish List choose option