This has been superseded by: 91490-30030-00

Yamaha Cotter Pin – 91490-30025-00

A cotter pin seems minor—right up until a loose castle nut strands you miles from the dock. This genuine Yamaha pin ( 3 mm Ø × 25 mm L ) keeps steering links, prop nuts, and trim-tab hardware locked tight when the chop gets rough. Yamaha forms it from marine-grade stainless steel, so it shrugs off salt spray, wet bilges, and the repeated bends that come with routine service. A chamfered nose guides smoothly through pre-drilled holes, while the evenly split legs flare cleanly with one squeeze of pliers—no wrestling, no jagged ends to fight later.

Why this little pin deserves space in your spares kit

• True OEM dimensions – matches Yamaha castle-nut specs; no trimming, no sloppy fit.

• Stainless toughness – resists rust and pitting season after season.

• Hassle-free install – tapered tip speeds dockside fixes; legs bend smoothly without breaking.

• Reusable strength – keeps its shape after multiple removals, unlike bargain pins that deform once and quit.

Drop a few 91490-30025-00 pins in your toolbox and head out knowing every critical connection stays exactly where Yamaha intended.