Complete ZF 8HP fluid and filter service for 2011-2018 Cayenne, Q7 and Touareg: 8 liters of OE-spec ATF, filter, pan gasket and drain seal.
A 958 Porsche Cayenne, Audi Q7 or VW Touareg that bangs into second on a cold start, hunts for lockup on the highway, or hesitates before Drive engages after sitting overnight is very often an eight-speed running on its original fluid. These SUVs use the ZF 8HP, coded 0C8 by Volkswagen and Audi, and they were sold as sealed for life. This kit, part number 958325KIT, is the complete fluid and filter service for that transmission: eight 1-liter bottles of German-made ATF, the filter with its seal, the pan gasket with spacers and the drain plug seal.
In the 8HP the fluid is the hydraulic medium, the coolant and the friction modifier all at once. The mechatronic unit applies five shift elements by metering pressure through solenoids, and each shift is timed to milliseconds based on how the clutches respond. As the fluid oxidizes and its friction additives wear out, that response changes, the adaptations drift, and the driver feels it as harsh or soft shifts and converter shudder. ZF's LifeguardFluid 8 data sheet calls the fill lifetime oil but still recommends a change at 150,000 km and sooner under heavy load or high heat, which describes a towing Touareg or a Cayenne driven hard. ATRA's GEARS magazine puts the practical interval at 70,000-80,000 miles.
The 8HP's known faults include mechatronic sleeve leaks that cause pressure loss and adaptation problems that cause harsh shifts. Fresh fluid will not seal a leaking sleeve, but most of the symptoms above on a high-mileage, never-serviced unit are fluid condition and a loaded filter, and they should be ruled out before paying for hard parts.
Scan for transmission codes, then check level and condition at the fill plug with the fluid at 30-50 C on a scan tool. If you have access to the clutch fill adaptation values, they are a useful health check before the service. Our ZF8HP fluid type and capacity guide explains which fluid each 8HP variant takes, and what a ZF8HP fluid change actually costs is worth reading before you get a dealer quote.
The kit is listed for the 2011-2018 Porsche Cayenne (958), 2012-2016 Panamera E-Hybrid, 2012-2015 Audi Q7 and 2011-2017 VW Touareg with the ZF 8HP eight-speed. Two cautions. First, the kit supplies a separate filter and a pan gasket rather than a new pan, so your transmission must have the reusable pan with a separate filter; confirm against your old parts or send us the year and VIN. Second, ZF's lubricant list places several hybrid 8HP variants in a different fluid group from the standard units, so Panamera hybrid owners should confirm the fluid specification for their transmission before using the included ATF. More ZF parts are on the ZF 8HP transmission parts page.
If the level check needs a little more, keep a 1-liter bottle of Top Tec ATF 1950 on hand. Audi owners comparing options can also look at the ZF 8HP service kit with 6L ATF for Audi.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Expect roughly 7-8 liters on a pan drop, which is why this kit includes eight 1-liter bottles. The final amount is set by the fill-until-it-runs-out level check, not by a fixed number.
It was marketed that way, but ZF itself recommends an oil change at 150,000 km and sooner under heavy load, high heat or unknown history. Many shops service it at 70,000-80,000 miles.
ZF lists the standard 8HP group under LifeguardFluid 8, with Porsche oil 000 043 210 54 and Audi/VW G 060 162 as the same approved oil. Hybrid variants can fall in a different group, so confirm yours.
It is listed for the 2012-2016 Panamera E-Hybrid, but ZF assigns some hybrid 8HP units a different fluid, so confirm the fluid spec for your transmission before filling.
With the engine idling in Park and the fluid at 30-50 C on a scan tool, cycle P, R and D, then fill at the fill plug until it trickles out. Checking at the wrong temperature gives a false level.
On a high-mileage unit with original fluid it often does. If harsh shifts remain after a correct service and level check, look at adaptations and the mechatronic next.
