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

Symptoms:

Wrong gear starts
Solenoid performance codes
TCC codes & concerns
Harsh shifts
Soft shifts
Burnt TCC apply components
Burnt clutches

Cause:

Bore wear at the solenoid regulator valve allows pressure loss that causes engagement issues and drivability concerns.

Correction:

Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized solenoid regulator valve kit.

4R44E, 4R55E, 5R44E, 5R55E

Oversized Solenoid Regulator Valve Kit
Part No. 37947-48K

Tooling:

37947-TL48

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Ford 4R44E, 4R55E, 5R44E and 5R55E units often suffer shift abnormalities caused by excess wear in the solenoid regulator valve bore. This wear allows fluid loss which prevents proper regulation of oil pressure supplied to control solenoids, resulting in harsh or soft shifts, solenoid codes, wrong gear starts, TCC apply issues and clutch failure. Reconditioning the bore and installing Sonnax oversized solenoid regulator valve kit 37947-48K re-establishes correct clearance for revived shift control in all ranges.

Hardcoat anodized aluminum valve combats premature wear
Spring calibrated to help restore OE function
Annular groove helps center valve in bore to reduce future side-load wear

Contents

Valve
Spring

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.