Yamaha - Woodruff Key Engine Timing Component 90280-05022-00. Overview. It's easy to overlook a part this small, but I've seen plenty of engines sidelined because of a failed key. When this piece wears or shears, things like timing and alignment go off fast. The Yamaha Woodruff Key 90280-05022-00 keeps everything indexed where it should be so components don't slip under load. It's a simple fix that protects a lot of bigger, more expensive parts.. Key Features. • Maintains Component Alignment - Keeps rotating parts properly positioned on the shaft.. • Supports Engine Timing Accuracy - Helps prevent slippage that can affect performance.. • Precision Yamaha Fitment - Manufactured to exact tolerances for proper seating.. • High-Strength Metal Build - Designed to handle torque and resist wear over time.. • Reliable Replacement Part - Ideal for maintenance, rebuilds, or repairs.. Engine & Boat Compatibility. The Yamaha Woodruff Key 90280-05022-00 is used across a wide range of Yamaha outboar