PART # 123949HD
Fits 8HP70 & 8HP75
The ZF8HP70 is equipped with a 38-spline "E" clutch hub from the OEM. However, some ZF8HP70 applications may have been updated to an OE 48-spline hub and planetary due to a previous failure. Make sure to verify spline count before purchase.
Symptoms:
- Failsafe mode
- Gear ratio codes
- Code P0731
- No 2nd
- No 3rd
- No 4th
- No 6th
- No 8th
Cause:
The lock splines on the "E" clutch hub have broken/sheared off and/or the clutch splines are heavily worn.
Correction:
Restore normal operation and avoid comebacks by installing upgraded Sonnax heavy duty "E" clutch hub.
