Product Description
Fits: 4R70E, 4R70W, 4R75E, 4R75W
2001 & later
The valve body stiffener plate in the 2-3 accumulator area was eliminated on 2001-later 4R70W &4R75W transmissions. Oil pressure builds up in unused cavities under the separator plate causing the plate to flex upwards as much as .010", allowing forward and direct oil passages to cross leak. The Sonnax retainer plate 76507F-01K bolts in place and provides the clamping force to compress the lower valve body gasket. This prevents cross leaks, separator plate flexing and cracking, so that cracked separator plates can be reused.
- Allows previously cracked separator plates to be reused.
- Prevents cross leaking.
- No special tools required.
- Installs in just minutes.
Symptoms
- Forward & direct clutch failure
- Separator plate cracking
- Cross leaks
Cause
Lack of reinforcement allows oil to push separator plate up, resulting in cross leaks and cracked plate.
Correction
This new Sonnax bolt-on plate provides mechanical clamping of lower valve body plate and gasket, eliminating cross leaks, cracks or plate flexing.
Contents
- Plate
- Gasket
- Bolts (2)
