ZF 6 Speed Auto Gearbox Seal Kit for Discovery 3 & 4, Range Rover Sport to 2013, Range Rover L322

ZF 6 Speed Auto Gearbox Seal Kit for Discovery 3 & 4, Range Rover Sport to 2013, Range Rover L322

This high-spec gearbox seal kit is designed for Land Rover models using the ZF 6-speed automatic transmission (6HP26 / 6HP28). As these vehicles age, the original seals in and around the mechatronic sleeve and valve body can harden or flatten, leading to internal pressure loss, oil leaks at the wiring sleeve and symptoms such as delayed engagement, harsh shifts or flaring between gears. Refreshing all the critical seals in one go while the sump is removed is a smart way to restore shift quality and protect the transmission from premature wear.

Matched to ZF reference 1068.298.090 and Land Rover kit number DA3869, this set includes the key seals, adaptor sleeve and bushes used around the valve body and control unit (equivalent to OE part numbers TZV500010, TGW500010, TZT500010, TZT500020, TZT500030). The components are manufactured to ZF-style specifications for precise fitment, reliable sealing under high hydraulic pressure and durability on vehicles that tow, off-road or cover high mileages.

The kit is a straightforward replacement for the factory parts and can be installed with normal workshop tools, making it suitable for both professional technicians and experienced home mechanics. Combining this kit with a fresh filter/sump assembly and the correct ZF-approved ATF during a service can greatly extend gearbox life, reduce the risk of fluid loss and help avoid costly future repairs.

Ideal for gearbox servicing, valve body work or mechatronic sleeve replacement, this kit helps minimise repeat labour and provides peace of mind that the main leak-prone seals have been renewed.