The Eaton Fuller Woodruff Key No. 128, part number X6-128 or X6128, is a genuine Eaton Fuller transmission service part. Woodruff keys are precision-cut semi-circular drive keys used to locate and secure rotating components such as gears and hubs to shafts inside Fuller transmissions, preventing rotational slippage during operation. Replacing a worn or damaged key with the correct OEM part ensures proper shaft-to-gear alignment and consistent power transfer. Pro Gear and Transmission carries genuine Eaton Fuller parts. Call us to confirm this is the correct key for your application before ordering.
Features
Genuine Eaton Fuller part number X6-128 or X6128
Woodruff Key No. 128 for Fuller transmission applications
Semi-circular key design for positive shaft-to-component location
Prevents rotational slippage between shaft and mounted gear or hub
Direct OEM replacement for worn or damaged keys
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