Sonnax 22827-01 Front Servo Piston Cover Kit with O-Ring

The Sonnax 22827-01 front servo piston cover kit is designed to overcome piston wear and ensure hydraulic seal of direct clutch oil in various Chrysler automatic transmissions, including A518, A618, A727, 46RH, 46RE, 47RH, 47RE, and 48RE units.

Key Features:

• Features an O-ring between the cover and pin to prevent wear and leakage
• Billet aluminum construction resists wear
• Stops direct (front) clutch oil leaks that undermine 2-3 shift and direct clutch durability
• Includes replacement O-ring for complete installation

This kit addresses common issues in Chrysler transmissions including long slide 2-3 shifts, direct clutch failure, and poor line pressure caused by line pressure leaking through the cover and past the pin. In 3rd gear, direct clutch oil is present under the servo cover to release the band, and oil leaks due to a worn cover affect 2-3 shift quality and direct clutch durability. The Sonnax replacement cover provides a positive hydraulic seal to restore proper transmission function.