Mercury 883704K03 | Gear Lube Pump Adapter 3/8-16 to M8x1.25The Mercury Gear Lube Pump Adapter 883704K03 converts gear lube pump tubes with 3/8-16 threaded end to fit metric 8x1.25 threaded gear lube fill holes. This enables the pump to be used for filling the gearcases of Mercury/Mariner 4/5hp (1987 and newer), 4/5/6hp FourStroke, 225 EFI FourStroke, 2005 and newer 8/9.9hp FourStroke, 2006 and newer 25/30hp EFI FourStroke, 15/20hp FourStroke (351cc), all Mercury/Mariner outboards of Japanese origin, and all Nissan/Yamaha/Tohatsu/Honda outboards requiring 8x1.25 threading.Fits Mercury/Mariner 4/5 HP (1987 and newer), 4/5/6 HP FourStroke, 225 EFI FourStroke, MY2005 & newer 8/9.9 HP FourStroke, MY2006 & newer 25/30 EFI FourStroke, the 15/20 HP FourStroke (351cc), all Mercury/Mariner outboards of Japanese origin and all Nissan/Yamaha/Tohatsu/Honda outboards with an 8x1.25 metric threaded gear lube fill hole.Key Product Features Fits Mercury/Mariner 4/5hp (1987 and newer), 4/5/6hp FourStroke, 225 EFI FourStroke, 2005 and newer 8/9.9hp FourStroke, 2006 and newer 25/30hp EFI FourStroke, and 15/20hp FourStroke (351cc); Fits all Mercury/Mariner outboards of Japanese origin and all Nissan/Yamaha/Tohatsu/Honda outboards with an 8x1.25 metric threaded gear lube fill hole; Mercury oils, lubricants and engine care products are backed by decades of experience in engineering, testing and manufacturing to provide the best protection and performance.;