Product Description
4R44E, 4R55E, 5R44E, 5R55E
TCC Regulator Valve
Part No. 37947-38
OE size
Debris and constant oscillation of the converter clutch regulator valve can create scratches on the critical valve spools, allowing valuable regulated line pressure to leak and setting 628 and 1741 codes. Excessive spool scratches also make the valve unsuitable for use with Sonnax TCC regulator sleeve kit 37947-09K. Sonnax direct replacement TCC regulator valve 37947-38 may be used in the original casting bore or with the Sonnax 37947-09K sleeve when the bore cannot be salvaged with an OE-diameter valve.
- Valve may be used with original OE casting
- Valve may also be used with Sonnax 37947-09K sleeve kit
- Hardcoat anodized valve prevents scratching on critical spools
Symptoms:
- Lost, damaged or modified original valve
- Code 628, 1741
- TCC apply concerns
