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ZF 8HP TRANSMISSION TORQUE RATINGS UP TO 900 N-M OF TORQUE

The 8HP is an eight-speed automatic transmission built by the ZF Friedrichshafen Company. The 8HP comes in a number of varieties, including the 8HP30, the 8HP45, the 8HP55, the 8HP70 and the 8HP90. The weakest of the varieties, the 8HP30, can handle up to 300 N-m of torque. The strongest–the 8HP90– can handle an unbelievable 900 N-m of torque.  The 8HP was designed to replace the 6HP transmission–a six-speed automatic– mainly to obtain better gas mileage in the vehicles it was used in. This transmission first went into production in 2008 and remains in production today.  The 8HP has a very steep 4.69:1 ratio first gear (excellent for quick take-offs), and a very generous overdrive ratio of 0.66:1 (great for maximizing gas mileage). A different version of the 8HP can be found in a wide variety of vehicles, including the Audi A4, the Bentley Mulsanne, the BMW 3 series, the Chrysler 300, the Dodge Durango, the Jaguar XF, the Lancia Thema, and the stellar Audi A5.

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