Protect your Mercury investment with genuine OEM parts that last. This CHECK VALVE, Drain Plug delivers years of reliable service – not just one season like cheap alternatives.

Built with Mercury Marine’s precision engineering, this component ensures reliable operation across all engine RPM ranges. Part number 824409 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.

Cut-rate alternatives might look similar, but they’re not engineered to Mercury’s exacting standards. Part 824409 delivers consistent performance because it’s built right — the same way Mercury does it at the factory.

Compatible Mercury Marine Engines

FITS:

• Compatible with Mercury Marine engines
• OEM genuine Mercury part

COMPLETE SERIAL NUMBER COMPATIBILITY:

HP Models

• HP OUTBOARD (Inflatables)

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

Verification & Support

Want to verify compatibility for part 824409? Use our parts finder tool for instant confirmation. Still have questions? No problem – use the contact buttons at the bottom of this page to reach us by text, call, or email

Four decades of marine parts experience. Low prices, fast shipping – most orders placed by 1pm ship today.