KEY - MOTOR PINION (Komatsu KO20182-00)

A worn motor pinion key can cause the pinion to slip, leading to a loss of drive engagement. This aftermarket replacement part references the Komatsu catalog number KO20182-00. The key is a small metal component that transmits torque from the motor shaft to the pinion gear. Its primary mechanical function is to prevent rotational movement between the shaft and gear. A common failure consequence is that a sheared key results in the motor spinning without turning the pinion. The item ships at approximately 0.02 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO20182-00, ko20182-00, KO2018200, ko2018200