Special transmissionfluid for the ZF 8-speed automatic transmission used by several manufacturers.

ZF8HP45, ZF8HP55, ZF8HP70 Tool Kit Part No. F-35740-TL5

• Reamer Jig • Guide Pin • Reamer Tool Kit for 35740-05 and 35740-18K

NOTE: Sonnax F-Tool kits designed to service a specific bore require the VB-FIX, a self-aligning valve body reaming fixture.

Oversized Clutch Holding Valve Kit Part No. 35740-20K

• Valve Spring

• End plug

• O-Rings (3) 1 Extra Fits five separate locations.

Clutch holding valve locations HV-C and HV-E use an end plug, the HV-A, HV-D and HV-B1 locations do not. The ZF8HP45/55/70 clutch holding valves provide solenoid feedback pressure to the clutch control valves, balancing each control valve to assist with apply and release of the respective clutch.

Excess wear at a clutch holding valve bore allows crucial fluid to escape the circuit. This can cause shift timing problems, a burnt clutch, ratio and solenoid codes, or loss of gears.

Reconditioning the bore and installing Sonnax oversized clutch holding valve kit 35740-20K eliminates bore wear and stops leakage for renewed clutch operation.

Hardcoat anodized valve combats premature wear Annular grooves help center the valve in the bore to resist wear Need to use tool F-35740-TL20