700R4 4L60E Input Drum Reinforcement Kit Sonnax Number 77733-02K

$ 34.00

SKU: SX 77733-02K, a19 ra b23 Categories: , , Tags: , ,


700R4 4L60E Input Drum Reinforcement Kit Sonnax Number 77733-02K.

The GM 4L60, 4L60-E, 4L65-E and 4L70-E input drum assembly is known to crack where the input shaft is pressed into it (where the overrun clutch rides).

Sonnax offers a hardened steel sleeve that reinforces the input drum to prevent this failure. OE overrun pistons must be machined when using Sonnax input drum reinforcement kit 77733-02K.

  • Sleeve made from hardened chromoly steel
  • Can be installed in early- and late-model units*
  • Sleeve design will not block clutch feed oil

*Will not repair a cracked drum. Requires 96-earlier aluminum forward piston or Sonnax billet forward piston number 77764-01, cannot be used with stamped steel forward piston.

  • Reinforcement Sleeve
  • Overrun Piston Inner Seal

Additional information

Weight 1 lbs
Dimensions 4 × 4 × 3 in