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4L60E / 4L65E Smart Shell


Retail: $134.38
Our Price: $99.88
You Save: $34.50
In Stock
Our Number: S-77749-02K
Manufacturer: Sonnax
Mfg Part # : 77749-02K
free shipping

4L60E / 4L65E Smart Shell Heavy Duty Upgrade
Engineered by Sonnax

This fits all below models of GM Automatic Transmissions:
 
4L60E / 4L65E


The Factory design has a Very High Failure Rate.
The number one failure point is spline damage , and the splines actually fracturing from the main shell.
The splines will beat out and become sharp, in extreme cases even strip out completely.

Sonnax has adressed this and other failure points of the rear planet section of the gear train.
They have done this by engineering a special bearing and roller clutch race.
These custom parts redirect the thrust away from the shell splines and onto the planet carrier
.

This shell has heat treated splines, as well as the hardened lugs that engage the drum, to avoid flareing.

In this 3 piece kit you will receive

1 Sonnax Smart Shell
1 Sonnax Engineered Bearing
1 Roller Clutch Race


Engineering Overview Video



This is sold as pictured 
 
Our Part #    S-77749-02K
Sonnax Part # 77749-02K


Customer Service is our Priority , Email us any questions you may have !
We do offer combined shipping for multiple purchases to Export Customers.
We would appreciate the opportunity to serve your transmission parts needs ! ! !




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