Fitment: The pinless forward accumulator piston kit is a replacement for 4L60E 4L65E 4L70E transmission, applicable for Forward 1?2, and 3?4, for Sonnax FWD 1?2 and 3?4.
Improved Transmission Performance: The pinless accumulator piston kit helps improve shift quality, prevent slips and burnt clutches, bands caused by accumulator piston wear.
OE Number: The referencing OE number of this pinless accumulator piston kit are 77998?03K, 77987?01K, S74927BK, S74927K.
Easy to Install: The kit is designed for easy installation, providing a hassle solution for improving transmission normal operation and performance.
Design: The dual seals and pinless design eliminate the possibility of pin leakage, stabilizing the piston and preventing cocking for long lasting performance.