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Over 15 million units produced. Installed in vehicles from BMW to Rolls-Royce, from Alfa Romeo to the Dodge Hellcat. The only automatic transmission to simultaneously dominate the civilian market, the drift scene, and drag racing circuits. In this four-part series, we dissect the ZF 8HP transmission: from the physics of planetary systems, through selecting the variant for a specific project, to service procedures, motorsport swaps, and TCU configuration. No marketing simplifications—pure technical knowledge you won't find in any owner's manual.

This is the final installment in our "all about the 8HP" series. The modern drivetrain market is dominated by the ZF 8HP design, which has displaced the older 6HP designs and dual-clutch transmissions from their leading position. The 8HP's key advantage is its unique strength-to-size-to-weight ratio. Its dimensions are comparable to the legendary American GM Turbo 400 unit, which, combined with extremely fast mechatronics, enables gear changes in the range of 50-100 ms. This makes it the ideal foundation for projects like Resto Mod and Motorsport Swap.

The ZF 8HP is considered the perfect transmission. It remains so as long as you strictly follow the maintenance requirements, change the oil at the recommended intervals, and properly diagnose any errors. In this guide, you’ll learn everything you need to know about the maintenance and requirements of the 8HP transmission, as well as the error codes and most common faults.

Are you determined to replace your gearbox and have decided that you want to go for an 8HP? In this article, you will learn about the different versions, which cars they were used in, and how the gearboxes from BMW and Jaguar differ from each other. Which versions should you use and which is the lightest? We invite you to read on.