Comet Reduction Gearbox - For MP20, MP30, P48/AP, P50, APS31, APS41, APS51 pumpsThis Comet Reduction Gearbox is a high quality, professional grade component designed to ensure optimal performance and longevity for a wide range of Comet pumps. It is specifically engineered to be a perfect match for a Lombardini 15LD engine, providing a secure and reliable connection to your pump. With a 1: 6. 44 ratio, it efficiently adapts the engine's 3600 RPM output to the lower operating speed required by your pump, significantly reducing wear