A reliable cooling system isn’t just about performance — it’s the backbone of your engine’s longevity. That’s exactly where the Mercury Marine Complete Water Pump Kit - 46-812966A12 comes into play. Designed to fit 30 to 60 horsepower Mercury FourStroke outboards, both EFI and carbureted models, this kit gives you everything needed to rebuild your water pump and keep cooling efficiency right where it belongs.

Every component in the kit, from the precision-molded impeller to the wear plate and gaskets, is built to factory specs. That tight fit matters, especially when you’re pushing through shallow flats, stirring up sand, or running in murky conditions where fine debris can wear down cheaper aftermarket parts. Mercury’s durable impeller material is designed to hold up in both freshwater and saltwater, giving you reliable flow when the engine needs it most.

What makes this kit worth installing:

• All essential parts included — impeller, gaskets, wear plate, and key hardware
• OEM fit and finish ensures proper sealing, consistent water flow, and easy installation
• Built to handle sand, silt, and light debris without sacrificing durability
• Compatible with 30-60 HP EFI and carbureted FourStroke outboards

Ideal for:

1. Preventive maintenance to avoid overheating on long runs or at idle
2. Rebuilding the cooling system after signs of low water pressure
3. Keeping both recreational and working boats running at safe temperatures

A solid water pump rebuild is one of those jobs that pays off trip after trip — this kit gives you the right parts to do it once and do it right.