ZF 8HP gearbox: which version do you have, and which parts fit it?

The ZF 8HP is ZF’s eight-speed automatic transmission with a torque converter. BMW was the first to use it, in the 7 Series, and it is now found in cars from Audi, Jaguar, Land Rover, Volkswagen, Porsche, Jeep, Chrysler and Maserati, among others. The gearbox comes in many versions, and not every part fits every one of them. This post explains how to tell which 8HP you have, which parts fit it and where to find them in our webshop.

Types and generations

The number after HP identifies the type. ZF is now building the fourth generation. The first generation includes the 8HP45, 8HP70 and 8HP90, the second the 8HP50, 8HP75 and 8HP95, and the third brought types such as the 8HP51 and 8HP76.

So two gearboxes that look alike can take different parts. Do not assume that a part for one type fits another: always compare the part number.

Audi has its own codes, such as 0BK (8HP55A), 0D5 (8HP65A), 0BL (8HP90A) and 0D6 (8HP95A). Stellantis, Chrysler’s parent company since 2021, builds its own versions under licence from ZF, including the 845RE, its equivalent of the 8HP45. There are hybrid versions too: our 2026 product catalogue, for example, has a flywheel for the ZF 8HP hybrid in BMWs. Our page on hybrid transmissions has more.

Which 8HP is in your car?

The gearbox case carries an identification plate with the transmission’s details, including the type (for example 8HP70) and the ZF number. You need those details when you order parts.

Our webshop has separate parts lists for the 8HP:

• ZF 8HP45, 8HP50 and 845RE
• ZF 8HP70, 8HP75 and 8HP90
• Audi and Bentley: 8HP55A (0BK), 8HP65A (0D5), 8HP90A (0BL) and 8HP95A (0D6)
• Torque converter parts for the 8HP

We supply 8HP parts for BMW, Audi, Volkswagen, Porsche, Bentley, Rolls-Royce, Jaguar, Land Rover, Maserati, Alfa Romeo, Jeep, Chrysler, Dodge, Ram and Iveco, among others. Not sure which parts fit your gearbox? Email the details from the identification plate to weborder@ganzeboom.net, with the make, model and year of the car.

8HP parts and their numbers

You can search the webshop by part number. The search also looks at the other numbers listed with each product, so a search for the number of an original part often shows the alternatives we hold for it as well. A few examples:

• Filter with oil pan (OEM) for the 8HP45, 8HP50, 8HP70 and 8HP75: 1087298437
• Filter with deep oil pan (Mopar OEM) for Chrysler 8HP70 and 8HP75 gearboxes: 0501219037
• Filter with oil pan for the Audi 8HP65A (0D5): 148710C
• Filter (OEM) for the Audi 8HP55A and 8HP90A (0BK and 0BL): 0501217777
• Connector (OEM) for the 8HP45 and 8HP70: 0501220929
• Front seal for the 8HP (OEM): 0734300296
• Coolant control valve for Audis with an 8HP, 0B5 or TR80: 4H0121671D
• Mechatronic for the BMW 8HP45 (exchange unit, OEM): 1090198969
• Mechatronic for the Jaguar 8HP70: 1087198913

For a rebuild, the parts lists above also include steel plates, solenoid sets and torque converter parts, among others.

Servicing an 8HP

Change the fluid and the filter to the manufacturer’s specification, using the transmission fluid specified for your gearbox. Most of the filters listed above are built into the oil pan, so the two are replaced together. Some gearboxes, for example those with a steel or aluminium pan, take a separate filter, and you will find those in the webshop too.

After a rebuild, or after a new mechatronic is fitted, the gearbox has to learn to shift again: the adaptation values are reset and the control unit relearns them during the prescribed driving procedure. On an 8HP this is always part of the job after a rebuild. The exchange mechatronic for the BMW 8HP45 must also be programmed after it is fitted. Also check whether there are software updates for the control unit. Our page on adaptation reset explains how it works.

Repair, rebuild or exchange?

On the 8HP, the electronic control unit and the valve body are combined in one assembly: the mechatronic. So a shifting fault can lie in the electronics or the hydraulics of that one unit, or in the gearbox itself, or simply be down to the wrong fluid level. Ganzeboom remanufactures automatic transmissions, valve bodies and torque converters. Where the control unit has failed, TCU cloning can sometimes be an alternative to a new unit with dealer programming.

For some parts, such as the mechatronic for the BMW 8HP45, the webshop offers an exchange unit. You then return the old part (the core) to us; our core return policy explains how. Complete 8HP transmissions are in the webshop too. Most carry the gearbox’s ZF number in their name, so you can search for it.

Not sure whether to repair, rebuild or exchange? Contact us with the details from the identification plate and we will tell you what is possible for your car.

Can’t find your part?

Start with the parts lists above, or search our webshop for 8HP. Not in the webshop? We also hold stock that is not online. Email weborder@ganzeboom.net with the details from the identification plate and we will look it up for you. You can also call us on +31 (0)546 819 510.