Symptoms:
- Soft shifts
- Poor shift quality
- Delayed engagement
- Low base line pressure
- High line pressure
Cause:
Circuit wear, relaxed OEM pressure regulator springs or overly aggressive aftermarket springs.Correction:
The Sonnax spring is designed to restore or increase line pressure up to 10 psi over OEM specifications while avoiding excessively high line pressure and harsh shifts.5R55S, 5R55W
Elevated Pressure Main Pressure Regulator Spring
Part No. 56947J-S7
Package Quantity: 5
Find a Distributor- Restores or increases line pressure up to 10 psi.
- Replaces lost original springs.
- No harsh shift effects of high line pressure.
- Drop-in installation requires no modifications.
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.
Ford 5R55S, 5R55W Valve Body Layout
