8HP70 Master Rebuild Kit 2010-2016, new and ready to install. Fits the 8HP70. Ships fast from the USA.
When an early BMW 5 Series, 7 Series, X5 or Jaguar XJ eight-speed is slipping and the fluid smells burnt, a reseal alone will not save it; the clutch plates have to be replaced too. This 8HP70 / 8HP75 master rebuild kit is the complete soft-parts set for that job. It combines three kits in one box under reference T21800C: the overhaul gasket and seal kit (T21802C), the friction plate kit (T218080B) and the steel plate kit (T218081B), along with the O-rings, sealing rings and thrust washers that come with it. Superseded numbers B218820C, B218880C and W218881C point to the same contents.
Inside the 8HP70, brakes A and B hold parts of the gear train to the case while clutches C, D and E lock rotating members together, and the transmission module times each swap from one element to the next in fractions of a second. That timing assumes each pack has the clearance and friction it had when new. Once the lining wears and the steels heat-check or warp, the pack takes longer to grip, the module stretches its adaptation, and eventually the overlap shows up as flare, a bump or a slip code. Putting new frictions against old, glazed or blued steels gives a poor bed-in and short life, which is why this kit includes both plate types instead of frictions alone.
Do the cheap checks first. BMW's own 8-speed diagnosis bulletin, SI B24 02 13, starts every shift complaint with a correct fluid level check, and a low 8HP can mimic a worn clutch. Next, consider the valve body: worn bores in the mechatronic cause delayed engagement and firm shifts with healthy clutches. If the level is right, the software is current and the pan shows lining material, the packs are worn. Our BMW 8-speed shift diagnosis guide and the ZF8HP problems and fixes guide cover the order of checks.
The title covers 2010-2016, while the application list printed with this kit is weighted to the first 8HP years: BMW 3 Series 2.0 and 3.0L, 5 Series and 5 GT 2.0 to 4.4L, 6 Series, 7 Series, X3, X5 and X6; Jaguar XF 3.0L, XJ 3.0, 3.6 and 5.0L and XK 5.0L; Land Rover Range Rover Sport 4.4L and Discovery; Aston Martin DB9 and DBS; and Rolls-Royce Ghost. Plate counts changed between first- and second-generation 8HP units, so on later vehicles count the plates in every pack during teardown and lay them beside the kit before soaking anything. Send us your year and VIN if you want us to check first. Related parts are on the ZF 8HP collection page.
Inspect the hard parts as the unit comes apart: drum splines, piston bores, bushings, thrust surfaces and the pump. A scored pump is common on a burnt unit, and the 8HP70 pump can go in during the same build. Keep each old pack bagged in order so you can match the selective plate and set clearance with a dial indicator. Soak the new frictions in ZF Lifeguard 8 before assembly and install the steels clean and dry of shop debris.
Clutch debris travels, so flush or replace the cooler before the rebuilt unit goes back in; an 8HP70 transmission cooler is cheaper than a second teardown. A dry unit takes about 9 liters of Lifeguard 8 through the fill plug, leveled warm with the engine running. Clear the adaptations and give the module a full learn drive.
| Fits | 8HP70 2010-2016 |
| Part type | Master Rebuild Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The overhaul gasket and seal kit, a friction plate kit and a steel plate kit, plus O-rings, sealing rings and thrust washers. Reference T21800C, made up of T21802C, T218080B and T218081B.
The title runs 2010-2016, but the printed application list favors earlier models and plate counts changed between generations. Count the plates in each pack at teardown, or send us your VIN before ordering.
The kit does not include one. Clutch debris collects in the converter, so most builders service or replace it on a burnt unit.
No filter is listed. Close the unit with a new pan and filter for your application.
About 9 liters of ZF Lifeguard 8 when dry, filled at the case plug and leveled warm with the engine running.
