KPMI SHIM(S), SPRING, 1.640″ OD X 0.635″ ID X 0.015″ H 4PK

Setting the correct installed valve spring height and pressure is critical , the proper operation of the valvetrain. KPMI® offers a large selection of valve spring shims to allow the builder to compensate , changes that may have occurred due to machining or custom parts usage.