Symptoms:

  • Soft shifts
  • Delayed Reverse
  • Low line rise

Cause:

Severe wear of the boost sleeve due to continuous valve oscillation allows EPC and Reverse boost oil leakage.

Correction:

Install Sonnax boost valve kit to restore hydraulic integrity.

4R100, E4OD

Boost Valve Kit
Part No. 36424-03K

Factory Style, No O-Rings


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

Vehicles with Ford E4OD and 4R100 transmissions frequently have problems with poor line rise and/or soft shifts. These complaints are often caused by severe wear of the pressure regulator boost sleeve, allowing EPC and Reverse boost oil leakage. Sonnax boost valve kit 36424-03K eliminates these problems.

  • Sleeve manufactured from highly wear-resistant aluminum alloy
  • Hardcoat anodized aluminum valve combats premature wear
  • Valve
  • Sleeve
  • 4R100, E4OD Boost Valve Kit 36424-03K
  • 4R100, E4OD Boost Valve Kit 36424-03K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

4R100, E4OD Boost Valve Kit Vacuum Test Locations