Transmission Parts Ford 4R44E 4R55E 5R44E 5R55E Valve Body Valve / Sleeve

Symptoms:

Lost, damaged or modified original valve
Code 628, 1741
TCC apply concerns

Cause:

Debris and constant oscillation of the converter clutch regulator valve can create scratches on the critical valve spools.

Correction:

Sonnax offers a drop-in TCC regulator valve, which may be used either in the original casting bore or in conjunction with the Sonnax sleeve 37947-09K when the bore cannot be salvaged with an OE-diameter valve.

4R44E, 4R55E, 5R44E, 5R55E

TCC Regulator Valve
Part No. 37947-38

OE size

You need this if... View Instructions Find a Distributor

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
Drop-in Zip Valve^™ installs quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

Valve Body Layout

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.