Product Description
4R44E 4R55E 5R44E 5R55E Oversized Solenoid Regulator Valve Kit
Sonnax Part Number: 37947-48K
TOOLING REQUIRED
- 37947-TL48
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
PACKAGE CONTAINS
- Valve
- Spring
SYMPTOMS
- Wrong gear starts
- Solenoid performance codes
- TCC codes & concerns
- Harsh shifts
- Soft shifts
- Burnt TCC apply components
- Burnt clutches
CAUSE
CORRECTION
Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized solenoid regulator valve kit.
