Input Drum Reinforcement Kit 4L60, 4L60-E, 4L65-E, 4L70-E

Name: Input Drum Reinforcement Kit 4L60, 4L60-E, 4L65-E, 4L70-E
Brand: SONNAX
SKU: 852-77733-02K
Price: 33.30 USD
Availability: OutOfStock

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Input Drum Reinforcement Kits

Input Drum Reinforcement Kit

4L60, 4L60-E, 4L65-E, 4L70-E

Reinforcement Sleeve and Overrun Piston Inner Seal Only

Reinforcement Sleeve
Overrun Piston Inner Seal

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

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

Part TypeAutomatic Transmission Valve Body Sealing Sleeve

BrandSONNAX

Package Height1.0

Package Width4.3

Package Length5.3

Weight0.13 PG

Part CategoryReplacement Parts

Part FitmentSemi Universal

Vendor Part Number77733-02K

Package Qty1

Package TypeEA

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Please click here to download the instructions PDF file

Some parts are not legal for use in California or other states with similar laws / regulations

Input Drum Reinforcement Kit 4L60, 4L60-E, 4L65-E, 4L70-E

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