Product Description
700R4 700 4L60 4L60E 4L65E 4L70E Sonnax 77733-51K Input Drum Reinforcement Sleeve, Seal & Piston Kit Fits All Years*.
Sleeve Made From Hardened Chrome-Moly Steel!
*PLEASE NOTE:
WILL NOT WORK WITH EARLY PRE-1996 TYPE CAST ALUMINUM FORWARD PISTON OR SONNAX BILLET FORWARD PISTON AND WILL REPLACE OEM OVER-RUN PISTON!
SEE PART # 77764A TO PURCHASE THE FORWARD PISTON, WE CAN COMBINE SHIPPING.
This listing will come with (1) ONE SONNAX 77733-51K KIT:
SONNAX 77733-51K
Input Drum Reinforcement Sleeve, Seal & Piston Kit
Reinforcement Sleeve
Overrun Piston Inner Seal
Overrun Piston
Overrun Piston Outer Seal
• INPUT DRUM IS NOT INCLUDED!!!!!!!
Part Summary
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 piston rides). Sonnax offers a hardened steel sleeve that reinforces the input drum to prevent this failure. Sonnax input drum reinforcement kit 77733-51K includes a custom manufactured overrun piston that is designed to be used only with a stamped steel forward piston, eliminating the need to use OE cast forward pistons or aftermarket billet forward pistons.
Features & Benefits
Includes a custom manufactured overrun piston
Compatible with stamped steel forward pistons
Can be installed in early- and late-model units*
Sleeve made from hardened chromoly steel
Sleeve design will not block clutch feed oil
*Note: Requires ‘1997 and Later Stamped Steel Bonded Rubber Seal Forward Piston, CANNOT BE Used With 1996 & Earlier Cast Aluminum Forward Piston or Sonnax Billet Forward Piston.
Here are some Applications for this Kit:
700R4 ALL YEARS**
4L60 ALL YEARS**
4L60-E ALL YEARS**
4L65-E ALL YEARS**
4L70-E ALL YEARS**
**PLEASE REMEMBER THIS KIT WILL ONLY WORK FOR THE STEEL BONDED RUBBER TYPE FORWARD PISTON.
Piston Part # 77764A
