Save hundreds in dealer fees – install this genuine Mercury Marine WASHER yourself. Our parts experts provide guidance if needed, and you get OEM quality at discount pricing.

Engineered to Mercury’s rigorous OEM standards, this component ensures reliable operation across all engine RPM ranges. Part number 44164 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.

Smart boat owners know: buying cheap parts twice costs more than buying genuine Mercury once. Part 44164 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 8-496HP MERCRUISER

• Fits MERCRUISER 8-496HP engines
• Compatible HP: 8HP, 496HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

8HP Models

• 8HP OUTBOARD (Mercruiser): 1A350340-2A041664, 2A041665-2A051741, 2A051742-2A051742, 1A350340-2A041664, 2A041665-2A051740, 2A051741-2A051741

496HP Models

• 496HP MAG (Mercruiser): 0W650000-1A066165, 1A066166-1A350678, 0W650000-1A066165, 1A066166-1A350678
• 496HP MAG EC (Mercruiser): 1A066166-1A350440, 1A066166-1A350440

HP Models

• HP OUTBOARD (Mercruiser): 0B664190-0F729999, 0F730000-0M100000, 0M100001-0W249999, 0B664190-0F729999

Not sure where to find your engine’s serial number? View our quick reference guide to locate it on your Mercury Marine engine.

Verification & Support

Want to verify compatibility for part 44164? 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

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