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Servo, GMC, 2nd Gear "Super Hold" Servo Assembly - GM 4L60, 4L60E, 4L65E, 4L70E
 Servo, GMC, 2nd Gear Super Hold Servo Assembly - GM 4L60, 4L60E, 4L65E, 4L7 Servo, GMC, 2nd Gear Super Hold Servo Assembly - GM 4L60, 4L60E, 4L65E, 4L7 |
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Part Number: TAT-77911-03K-SX
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Servo, GMC, 2nd Gear "Super Hold" Servo Assembly - GM 4L60, 4L60E, 4L65E, 4L70E
The Sonnax 4L60/4L60-E 2nd Gear Super Hold Servo has 18% more apply area than the Corvette servo (largest OEM) and maximizes holding power in 2nd gear with more positive 1-2 and 2-3 shifts. Dual seals on the 2nd gear piston and separator ensure positive band apply/release and eliminate cross leaks, which contribute to 2-4 band and 3-4 clutch failure. This servo is the perfect option when more holding power is desired without causing excessively harsh upshifts and downshifts. The included apply pin is longer than the longest OE pin, and has added seals to reduce leakage of 3rd and 4th gear oil pressure.
Features & Benefits
18% more apply area than OEM Corvette servo
Dual seals on 2nd apply piston and separator
Servo piston and separator are made from 6061- T6 aluminum
O-ring seal between pin and 2nd gear piston
Two Teflon???? rings seal pin to bore
Servo pin is made from Chrome-moly steel
Kit includes all necessary seals
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