What is zf 4hp22?

ZF 4HP22 is a four-speed automatic transmission designed by German automotive company ZF Friedrichshafen AG. It was primarily used in rear-wheel drive vehicles from BMW, Jaguar, and Land Rover, among others. It features a hydraulic torque converter and electronic control system, and can handle up to 300 Nm of torque, depending on the version. The 4HP22 was produced between 1984 and 2005 and is known for its reliability and longevity. It is still widely used in classic cars and is considered a benchmark for modern automatic transmissions.