WINGOGO Water Pump Impeller Repair Kit for Yamaha 40–60 HP — Complete Rebuild Kit

WINGOGO's Water Pump Impeller Repair Kit (63D-W0078-01-00 / 18-3434) is a full replacement kit that restores cooling circulation for compatible Yamaha 40–60 HP outboards.

If your Yamaha outboard is losing cooling efficiency, leaking at the pump, or showing overheating signs, replacing the impeller assembly with a complete rebuild kit is the most reliable fix. This WINGOGO kit contains the impeller plus all related plates, gaskets, seals, hardware and the housing cover to rebuild the water pump to OEM-style spec for many Yamaha 2-stroke and 4-stroke 40, 50 and 60 HP models.

Which Yamaha engines work with this impeller repair kit?

This kit cross-references Yamaha OEM part numbers 63D-W0078-01-00, 63D-W0078-00-00 and 63D-W0078-0A-00 and fits a range of 40–60 HP engines. Compatibility includes specified model years for both 2-stroke and 4-stroke variants, but you should confirm with your engine model or serial number before ordering.

• 4-stroke: F40 (1999), F50 (1995–2009), F60 (2002–2009)
• 2-stroke: 40 HP (1995–2005; C40 1997–2003; P40 1998), 50 HP (1995–2009; C50 1998–2001; P50 1995–1996)
• Cross-compatible with Sierra part numbers 18-3415 and 18-3434
• Verify fitment using your engine model and serial number before installation

What parts are included and why each matters?

The kit supplies every component necessary to rebuild the water pump, preventing additional trips to the store. Using matched parts reduces leak points and restores correct internal clearances that the impeller needs to pump water efficiently.

• Neoprene impeller (6H3-44352-00-00 / 18-3069) — the rotating element that moves cooling water
• Cartridge outer plate and insert (63D-44323 & 63D-44322) — set precise clearances for pump efficiency
• Gasket, O-ring and seal damper — restore watertight sealing and prevent cavitation
• Woodruff key and installation bolts with washers — secure alignment and fasten components correctly
• Water pump housing cover — replaces worn cover surfaces that cause leaks

How difficult is installation and what tools are recommended?

Installation is a moderate DIY job for anyone comfortable removing the lower-unit or pump cartridge; basic hand tools and a torque wrench are usually sufficient. If you haven’t done a pump rebuild before, plan time to follow a service manual and consider a seal puller or impeller puller for tight fits.

• Recommended tools: socket set, torque wrench, seal puller, screwdrivers, marine grease
• Allow time: typically 1–3 hours depending on experience and boat setup
• Follow manufacturer torque specs and inspect the housing bore for wear
• Replace the impeller at first sign of cracking, hardening, or reduced flow

Will this kit match OEM quality and performance?

The components are supplied to meet or exceed the original equipment specifications listed for Yamaha, offering a cost-effective alternative to dealer parts while restoring pump function. As with any replacement, fitment checks and correct installation are essential for dependable performance.

• Meets OEM part cross-reference numbers for accurate replacement
• Includes full gasket and seal set to minimize future leaks
• Neoprene impeller selected for typical marine cooling service life
• Backed by clear part references to help verify compatibility

Who is this for: This WINGOGO impeller repair kit is designed for boat owners, marine mechanics, and weekend DIYers who maintain Yamaha 40–60 HP outboards and need a complete water pump rebuild solution. It’s suitable for those wanting to restore cooling system reliability without sourcing multiple individual parts; verify engine model and serial number before purchase to ensure proper fit.