• Burned Reverse band
• No Reverse
• Reverse servo piston plug breakage
• Reverse servo piston plug wear

The OEM aluminum servo plugs wear and gall due to soft material and are also prone to break at the spring seat area due to high stresses in reverse.

The improved Sonnax servo plug is double the tensile strength of the OE part, reduces the major stress riser, and works in all applications.

Additional Resources