Boat owners, this water pump kit has everything you need to replace your Mercury MerCruiser's cooling system! Specifically designed for models using part numbers 46-96148A8, 4696148A8, and 96148A8, this complete assembly includes the housing, impeller, tube guide, tube grommet, base to housing gasket, wear plate, lower plate gasket, upper plate gasket, oil passage seal, two drain screw gaskets, and five O-rings. Fits Mercury & Mariner 4 cylinder and 6 cylinder outboards with short-vane impellers, plus MerCruiser R/MR/Alpha drives. Before ordering, double-check your OEM part number along with your unit's model, spec, type/code, and serial number to ensure perfect compatibility. Regular water pump maintenance is crucial for preventing overheating and engine damage, so having a complete kit like this makes the job much smoother. The quality components match OEM specifications for reliable performance and longevity. Installation is straightforward if you're mechanically inclined, though many boat owners prefer professional installation. Much more cost-effective than dealership parts without sacrificing quality. Keep your engine running cool and reliable all season long with this comprehensive replacement kit. Always verify fitment before purchasing - if you're unsure, contact the seller with your specific model details to confirm this is the right part for your marine engine.