Transmission Parts Honda/Acura ZF Honda, Acura 9-Speed ZF9HP48 Valve Body Valve / Sleeve

Symptoms:

Loss of higher gears
Damaged A dog clutch
Damaged F dog clutch
Input shaft damage
P3 & P4 sun gear damage
Delayed engagement
Cycling RPM during shift

Cause:

The dog clutch plunger valves provide source pressure for both the A and F dog clutch apply and release. Responding to TCM and the linear solenoid, the clutch control valve establishes control timing of apply and release relative to engine RPM. Bore wear will cause an overlap or premature exhaust of clutch pressure.

Correction:

Sonnax drop-in A & F dog clutch plunger valve kit corrects circuit pressure loss and restores control timing of the A and F dog clutch valves.

Warning:

The ZF9HP48 PBW (Park By Wire) and PBC (Park By Cable) have different plunger valve diameters than Chrysler applications and should not be interchanged.

Honda, Acura 9-Speed, ZF9HP48

A & F Dog Clutch Plunger Valve Kit
Part No. 85740-22K

Fits units with .196" dia. plunger valve only.

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Honda/Acura 9-speed and ZF9HP48 transmissions are equipped with an aluminum sleeve for the A and F dog clutch plunger valve. This material is prone to wear from valve plunger reciprocation. Failure of this sleeve results in a variety of shift problems and solenoid codes. Sonnax A & F dog clutch plunger valve kit 85740-22K restores the correct hydraulic clearance and proper function of the assembly.

Hardcoat anodized aluminum valves combat premature wear
Highly wear-resistant sleeves increase service life
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

Contents

Valves (2)
Sleeves (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.