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 2- and 4-stroke outboard engine in the market. The UC128 cylinders are recommended for use with UP25, UP28, UP33 and UP39 series helms and preassembled hoses (Kit OB and Kit OB-BHBR). We offer the UC128-OBF cylinder in three versions to cover most applications.