Tool Required VB-FIX Required
- Coastdown Neutral
- Flare shifts & bind-ups
- Harsh downshifts
- Pressure control out-of-range codes
Excess wear at clutch A or E control bore allows critical pressure loss that prevents proper clutch action.
The Sonnax oversized valve corrects circuit pressure loss and restores control timing of the clutch control valves.
Oversized Clutch A & Clutch E Control Valve Kit
- Clutch Control Valve
- Boost Valve
- Boost Sleeve
- O-Ringed End Plug
- O-Rings (2) 1 Extra
This kit will fit in either clutch A or E control bore locations in M-shift versions of ZF6HP21/28/34 (Generation 2) valve bodies only. For E-shift versions, Sonnax offers 95740-72K.
Flare upshifts or downshift bind-ups are common problems in vehicles equipped with ZF6HP21/28/34 (Generation 2) transmissions. These problems can be accompanied by a coastdown neutral condition or pressure control out-of-range codes. The clutch control valves control clutch apply and release timing, and problems occur when the clutch control valves wear. Sonnax offers the oversized clutch A and clutch E control valve kit 95740-66K (M-shift version) to restore shift timing and vehicle drivability.
- Valves are hardcoat anodized to reduce wear
- Sleeve is made from highly wear-resistant aluminum
- O-ringed end plug for better sealing
Kit is NOT compatible with ZF6HP19/26/32 (Gen.1) units. To differentiate between Gen. 1 and Gen. 2 valve bodies, see ZF Identification Guide.
- Required Tool
- Related Part
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- Related Tech Resources
- Valve Body Layout
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Vacuum tests at the ports indicated fail to hold the recommended minimum in-Hg.
Click here to view PDF if instructions do not appear below.
Valve Body Layouts
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