Sonnax 77701-04SK Replacement Servo Seal Kit for GM 4L60 4L60-E 4L65-E 4L70-E

The Sonnax 77701-04SK is a replacement seal kit designed specifically for use with the Sonnax 77701-04K 2nd Gear "Corvette" Ratio Servo Kit. This genuine Sonnax seal kit allows you to refresh worn or damaged seals and restore optimal sealing performance in your GM 4L60, 4L60-E, 4L65-E, and 4L70-E automatic transmissions.

Key Features:

• Direct replacement seal kit for Sonnax 77701-04K servo piston
• Includes two piston D-rings and one housing O-ring
• PTFE seals with improved design to conserve pump volume
• Ensures positive sealing and prevents piston contact and bore scuffing
• Genuine Sonnax quality for reliable transmission performance

This seal kit is essential for maintaining the performance of your Sonnax "Corvette" ratio servo during rebuilds or when seals show signs of wear. The high-quality PTFE seals provide superior sealing characteristics compared to stock components, helping ensure firm shifts and proper band apply and release in high-performance and heavy-duty towing applications.

What's Included: Two piston D-rings and one housing O-ring for complete servo seal replacement.