Yamaha - Woodruff Key - Engine Timing Component - 90280-05049-00

Overview

It’s a tiny part, but when a woodruff key goes, it can throw everything off. I’ve seen engines lose timing or spin components out of alignment just because this piece sheared or wore down. The Yamaha Woodruff Key 90280-05049-00 is what keeps critical rotating parts locked in place where they belong. It’s one of those simple parts you don’t think about—until it fails.

Key Features

• Secures Rotating Components – Locks shafts and mating parts in correct alignment.

• Maintains Engine Timing Integrity – Helps ensure proper positioning of key engine components.

• Precision Yamaha Fit – Manufactured to exact dimensions for reliable engagement.

• Hardened Metal Construction – Built to handle torque and resist shearing under load.

• Simple Replacement Part – Easy to install during routine service or repairs.

Engine & Boat Compatibility

The Yamaha Woodruff Key 90280-05049-00 is used across a wide range of Yamaha outboard engines and marine equipment.

It is commonly found in applications involving crankshafts, flywheels, and other rotating assemblies where proper alignment is critical. Always confirm compatibility using your engine model and parts diagram before installation.

FAQ

Q: What happens if a woodruff key fails?
A: Components can slip out of alignment, causing timing issues or engine damage.

Q: How do I know if the key is worn or damaged?
A: Look for deformation, rounding, or signs of shearing.

Q: Should I replace the key when servicing related parts?
A: It’s a good idea, especially if there’s any sign of wear.

Q: Is installation difficult?
A: Not usually, but proper seating and alignment are important.

Q: Can corrosion affect this part?
A: Yes, especially in marine environments, so inspection is key.

• Supersessions
  90280-05015-00