The Subaru / Robin 20B-31601-20 Camshaft Assembly ensures precise valve timing to support smooth engine performance and reliable combustion. This camshaft assembly is a key internal engine component that controls the opening and closing of intake and exhaust valves through coordinated rotational movement. Designed to fit compatible Subaru/Robin small engines, it helps maintain consist... https://www.wholetoolbox.com/subaru-robin-20b-31601-20-camshaft-assembly