Every component in your marine engine plays a role in keeping things running smoothly, and the Mercury Washer (12-8M0214950) is no exception. Designed for Mercury and MerCruiser engines, this small but essential part helps secure bolts and fittings, preventing unwanted movement that could lead to wear or mechanical failure.. Built from marine-grade, corrosion-resistant materials, this washer is tough enough to withstand the relentless exposure to water, vibration, and high-stress conditions. It ensures a snug, even fit, distributing pressure effectively to reduce strain on fasteners. Whether you're tightening a key engine component or replacing worn hardware, this OEM washer helps maintain structural integrity and long-term reliability.. Why It's a Smart Choice:. Locks Fasteners Securely - Prevents loosening due to vibration and engine movement.. OEM Precision Fit - Designed to Mercury's exact specifications for easy installation.. Built for Harsh Conditions - Resists corrosion and wea