valve cover adapter set, most two valve big twins

CNC machined valve cover adapter set allows use of round head valve covers (rocker covers) on square head motors, or the other way around. Works for all round head and square head two valve rocker covers from 1967 through 2012. Thin aluminum adapters require one square head valve cover gasket and one round head valve cover gasket per valve cover. Note: some early fuel injected models (California 1100 1994-1997, California EV 1998-2000) had a hole for a temperature sensor in the left valve cover so you need to account for that to use early valve covers on these models.