GM 3039491 Ported Vacuum Switch / EGR Control 212-27 or 212-47 1970s Trans Am
$100
GM 3039491 ported vacuum switch (Thermal Vacuum Switch) 212-27 or 212-47 1970s Trans Am and Camaro. Ported Vacuum Switch / Thermal Vacuum Switch (often cross-referenced with ACDelco/Delco numbers like 212-27 or 212-47).
