Yamaha - Key, woodruff - 90280-04002-00 Mercury-75HP-EFI-2009 OEM anodes aren’t guesswork—they’re engineered

OEM anodes aren’t guesswork—they’re engineered for the exact metal composition and geometry of your drive

and balance the engineers intended for the V12 lineup

CLEAR COAT SAFE: Safe and effective on all glossy paints and clear coats

and confirm through your serial number

If the bulb cannot maintain pressure

Yamaha - Key, woodruff - 90280-04002-00 Mercury-75HP-EFI-2009 OEM anodes aren’t guesswork—they’re engineeredYamaha Woodruff Key Flywheel & Shaft Alignment 90280 04002 00 Overview This woodruff key is one of those pieces that quietly keeps everything in sync inside your engine. It holds components in the exact position they need to be so timing stays consistent every time you fire up. Ive seen engines act completely off just because this small part was worn or slightly out of place. Its not complicated, but its absolutely essential if you want things running