Stop fighting with your Mercury engine. This factory-spec **IMPELLER | COMPONENT OF WATER PUMP REPAIR KIT [42431M] OR [97793T]** eliminates common issues and delivers the smooth operation you expect from genuine OEM components.

Built to Mercury’s exacting factory standards, this water pump assembly ensures reliable operation across all engine RPM ranges. Part number 84797M is manufactured to exact Mercury Marine factory specifications for precision installation and optimal performance. Constructed from premium marine-grade materials designed to withstand harsh saltwater and freshwater environments.

Aftermarket parts might save a few dollars upfront, but genuine Mercury Marine part 84797M saves you money long-term by lasting years instead of months. Factory precision means perfect installation – no modifications, no surprises.

FITS: 20-30HP MARINER

• Fits MARINER 20-30HP engines
• Compatible HP: 20HP, 25HP, 30HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

20HP Models

• 20HP OUTBOARD (Mariner)

25HP Models

• 25HP OUTBOARD (Mariner)

30HP Models

• 30HP OUTBOARD (Mariner)

Need help finding your serial number? Check our serial number location guide for step-by-step instructions on locating it on your engine.

Not sure if part 84797M fits your engine? Try our parts finder tool – it’s quick and easy. Need expert help? Contact us using the buttons at the bottom of this page – text, call, or email, whatever works best for you.

Trusted by boaters since 1985. Save up to 20% below retail on factory Mercury Marine parts.