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Vehicle Info NeededSONNAXPART NUMBER: 852-77701-04K
2nd Gear Servo Kit GM 4L60, 4L60-E, 4L65-E, 4L70-E
$6110
Ships on 09/10/2026
Lowest Price GuaranteeGM 4L60/4L60-E/4L65-E/4L70-E
2nd Gear Servo KitGM 4L60, 4L60-E, 4L65-E, 4L70-E
Sonnax 2nd gear "Corvette" ratio servo kit 77701-04K provides increased apply area resulting in improved holding power for firmer 1-2 and 3-4 shifts. The servo piston features D-rings in place of the OE seal rings for improved sealing during apply and release. This kit is compatible with Sonnax 4th gear Super Hold dual servo assembly 77767K.
- Piston
- Piston D-Rings (2)
- Housing
- Housing O-Ring
Sonnax 2nd gear "Corvette" ratio servo kit 77701-04K provides increased apply area resulting in improved holding power for firmer 1-2 and 3-4 shifts. The servo piston features D-rings in place of the OE seal rings for improved sealing during apply and release. This kit is compatible with Sonnax 4th gear Super Hold dual servo assembly 77767K.
- Upgrade used for high performance or heavy-duty towing applications
- Improved D-ring sealing configuration
Part TypeAutomatic Transmission Servo Piston
Product LineSonnax 2nd Gear Servo
BrandSONNAX
Package Height2.3
Package Width4.4
Package Length4.8
Weight0.66 PG
Part CategoryReplacement Parts
Part FitmentSemi Universal
Vendor Part Number77701-04K
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
