Hello and welcome to this listing, for a rare Kelvin Diesel R4 60 bhp Fitted with a 2.5:1 reverse/ reduction hydraulic Kelvin gearbox&Kelvin Stern gear. if your reading this and looking to purchase an engine for commercial purpose, and thats built to last with very little use then your in the right place. Our engine is still in our private boat and has only covered 5322 hours working time in its 62 years! If you can find another kelvin in this condition with extremely low running hours let me know Any questions please get in touch. Of course im open to sensible offers