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Sonnax Adjustable Rear Servo Pin Kits

3.0 out of 5 stars 2 Customer Reviews

The Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. OE pins have seven different lengths to allow for adjustment of the Low/Reverse band—but are no longer available from GM. The Sonnax pin kit has an adjustment range that covers the five longest OE pins to allow for accurate setting of the Low/Reverse servo piston travel. The pin features an O-ring groove to prevent leakage of line pressure past the case pin bore. Kit contents: * Servo Pin * Screw * (4) Small washers * (1) Large washer * (2) O-Rings

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Sonnax Adjustable Rear Servo Pin Kits 34912-01K

Automatic Transmission Component, Low/Reverse Band Servo Pin, Kit

Part Number: SOX-34912-01K

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

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