Compatible with competing helms, hoses and oil, the UC128 cylinder is built to last with heavy duty stainless steel cylinder rod, seals and link assemblies. Constructed of top grade materials this cylinder is simple to install and fits almost every two and four stroke outboard engine in the market. See the application guide below to choose the appropriate cylinder (UC128 OBF 1 or UC128 OBF 2) for your application. *See application guide for more information.