Product Description
Sonnax part number: 76948-02K
4R70E, 4R70W, 4R75E, 4R75W, AODE
Fits all '91-Later applications.
Ford vehicles with 4R70E, 4R70W, 4R75E, 4R75W and AODE transmissions may exhibit insufficient line rise in Reverse, delayed or slipping Reverse, and/or a burnt Reverse clutch. Continuous oscillation of the OE boost valve within the boost sleeve causes premature wear, creating a path for boost pressure to exhaust and causing these concerns. Installing Sonnax boost valve kit 76948-02K eliminates pressure loss, restoring proper line rise and robust Reverse action.
- Hardcoat anodized aluminum valve combats premature wear
- Sleeve manufactured from highly wear-resistant aluminum
Symptoms
- Low Reverse boost
- Delayed Reverse
- Reverse slip
- No Reverse
- Low line rise in Reverse
- Burnt Reverse clutch
Cause
Worn OE boost sleeve allows critical pressure loss that prevents proper Reverse operation.
Correction
Stop boost leakage and renew Reverse performance by installing Sonnax boost valve kit.
Contents
- Valve
- Sleeve
Product Videos
Custom Field
Transmission Model(s) 4R70, 4R75, AODE
Year Range 1991-UP
