Sonnax oversized servo pin kit 77787-03K is for use in reconditioned GM 4L60, 4L60-E, 4L65-E and 4L70-E case bores. Matching the longest OE pin length, this chromoly steel servo pin is durable enough for high performance applications as well as stock replacement.

Included stiffer 4th apply spring eliminates unwanted band drag in 3rd Gear
Added O-ring improves sealing between the pin and 2nd Gear servo
Servo pin is fully compatible with OE and aftermarket servos

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