6HP is ZF Friedrichshafen AG's trademark name for its six-speed automatic transmission models (6-speed transmission with Hydraulic converter and Planetary gearsets) for longitudinal engine applications, designed and built by ZF's subsidiary in Saarbrücken. Released as the "6HP26" in 2000, it was the first six-speed automatic transmission in a production passenger car. Other variations of the first generation 6HP in addition to the "6HP26", were "6HP19", and "6HP32" having lower and higher torque capacity, respectively. In 2007, the second generation of the 6HP series was introduced, with models "6HP21" and "6HP28". A "6HP34" was planned, but never went into production.