Craftsman 590100301 Transaxle Output Shaft Seal

Product Description

The CRAFTSMAN 590100301 is a transaxle output shaft seal designed for lawn tractors. It seals the output shaft on the transaxle assembly, preventing fluid loss and contamination ingress at the drivetrain interface. Maintaining a proper seal at this location is critical to transaxle longevity and consistent drive performance. This is an OEM replacement part installed by outdoor power equipment technicians and experienced DIY operators performing transaxle service or drivetrain repairs.

This seal fits into the transaxle output shaft bore on CRAFTSMAN lawn tractors. It is used in residential lawn tractor applications where the transaxle transfers power from the engine to the drive wheels. Compatible models listed by the manufacturer include the RS800, GT87070, and GT87069. Installation typically occurs during routine transaxle service, fluid leak diagnosis, or when shaft seal wear is identified during drivetrain inspection.

Key Features

• OEM replacement seal for CRAFTSMAN lawn tractor transaxle output shaft
• Prevents transaxle fluid leaks at the output shaft interface
• Designed to match original factory fit for listed compatible models
• Direct replacement requiring no modification during installation

Compatibility

Compatible with CRAFTSMAN lawn tractor models RS800, GT87070, and GT87069 as stated by the manufacturer. Verify the transaxle model and output shaft diameter against the original part number before installation.

Installation Notes

Installation should be performed by a qualified outdoor power equipment technician or a knowledgeable operator familiar with lawn tractor drivetrain service. Disconnect the spark plug wire and allow the transaxle to cool before beginning any seal replacement work. Use appropriate seal driver tools to press the new seal squarely into the bore without distorting the sealing lip. Inspect the output shaft surface for scoring or corrosion before installing the new seal, as a damaged shaft surface will cause premature seal failure.