Sonnax 34298-078 Forward Clutch Hub Front Washer .078" Thick for GM TH400 TH425 4L80-E 4L85-E (5-Pack)

The Sonnax 34298-078 forward clutch hub front washer is a precision transmission component designed to replace the OE .063" thick washer in GM TH400, TH425, 4L80-E and 4L85-E transmissions. At .078" thick, this washer is .015" thicker than the original equipment version, making it the optimal solution for tightening front unit endplay in most common builds.

Key Features:

• Thicker than OE design for quick and easy endplay adjustment
• Installs between the forward clutch hub and forward drum
• Shimming at this location does not alter the endplay path through the unit
• Sold in convenient 5-piece set for multiple builds or service applications
• Precision manufactured steel construction for durability and reliability

Specifications:

• Thickness: 0.078" (.015" thicker than OE .063" washer)
• Outer Diameter: 1.781"
• Inner Diameter: 1.289"
• Material: Steel
• Package Quantity: 5 washers per set

This washer serves as an alternative to Sonnax washers 34301-078 and 34301-094, providing transmission builders and rebuilders with flexible options for achieving proper forward clutch endplay specifications. Ideal for professional transmission shops and experienced DIY enthusiasts working on GM automatic transmission rebuilds.