Product Description
Fits: 4F50N, AX4S, AX4N, AXODE, AXOD
Fits all except 3.0 liter 12 valve, factory style sleeve, no O-ring.
Vehicles with Ford AXOD, AXODE, AX4S or AX4N transmissions frequently have flare 1-2 and 2-3 upshifts, high pressure, harsh Reverse (300 psi), 2-1 downshift clunk, non-adjustable throttle pressure and clutch or band failure from poor line rise. This is caused by wear on the inside bore of the boost sleeve allowing TV/EPC and/or Reverse oil to either leak to exhaust or cross-leak. Sonnax offers boost valve kits for both 3.0 and 3.8 liter applications and sleeves with or without O-rings (factory style) to eliminate the above problems.
- Sleeves are made from high-quality aluminum to prevent wear
- Hardcoat anodized aluminum valve combats premature wear
- O-ring sleeves prevent leakage between the sleeve and valve body bore
- Available in two sizes: 96201-12K (O-ring style) with a small diameter boost valve of .475"; 96201-01K (O-ring style) and 96201-08K (factory style) with a small diameter boost valve of .491"
- Drop-in Zip Valve® parts install quickly and easily
Symptoms
- 1-2 Flare
- 2-3 Flare
- 2-1 Clunk
- Harsh Reverse
- Clutch failure
- Band failure
- Non-adjustable (high) throttle pressure
Cause
The boost valve wears the inside diameter of the boost sleeve, allowing TV/EPC and Reverse oil leakage.
Correction
Sonnax drop-in boost valve kits provide wear-resistant materials, minimum clearance for restored pressure control, and optional O-rings for positive sealing within the bore.
Contents
- Sleeve
- Valve .491"
- O-Rings (2)
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.
Ford AX4N, 4F50N Valve Body Layout
Ford AX4S, AXOD, AXODE Valve Body Layout
