Reducing Valve Kit
Part No. 35740-38K

Vehicles with ZF8HP50, ZF8HP75 and ZF8HP95 transmissions may exhibit insufficient line rise in drive ranges, soft shifts and/or burnt clutches. These problems may be caused by continuous oscillation of the reducing valve in the sleeve, creating excessive wear and a path for critical cutback pressure acting against line pressure to leak to exhaust. Sonnax reducing valve kit 35740-38K has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control. The sleeve also incorporates an O-ring to prevent critical fluid from leaking to exhaust.

• Sleeve is manufactured from highly wear-resistant billet aluminum to prevent future wear
• Hardcoat anodized aluminum valve combats premature wear
• O-Ringed sleeve provides positive seal to prevent critical line pressure fluid from leaking to exhaust
• Drop-in Zip Valve™ parts install quickly and easily

Contents

Front Stator Support Bushing Part No. 35036

Package Quantity: 5

Symptoms:

• Bushing failure • Bushing wear • Harsh downshifts • Harsh TCC apply • TCC apply & release concerns

Cause:

OE bushing material composition allows premature wear.

Correction:

Install improved Sonnax front stator support bushing to restore critical clearances and resist untimely wear. OE front stator support bushings in ZF8HP45 units have a tendency to wear out prematurely due to sub-optimal material composition. This wear can lead to TCC apply and release concerns and harsh downshifts when TCC is engaged below 20 mph. Sonnax front stator support bushing 35036 restores worry-free operation.

• Upgraded material composition outperforms OE bushing

• Superior wear characteristics eliminate premature deterioration

WARNING:  Use of an arbor press is required for correct installation.

Do not use a hydraulic press or a bushing driver/hammer combination to install, as doing so will distort the bushing and cause fitment issues.