5HP19

The ZF 5HP19, known as A5S325Z in BMW applications, is a 5-speed electronically controlled automatic transmission for longitudinal rear-wheel-drive vehicles. It uses a torque converter with lock-up clutch and electronic-hydraulic control, with a maximum input torque of approximately 300 Nm.

Specification: 5-speed automatic • ZF 5HP19 • BMW A5S325Z • Longitudinal installation • Rear-wheel drive • Torque converter with lock-up clutch • Electronic-hydraulic control • 3.67:1 first gear • 0.74:1 fifth gear • 4.10:1 reverse • Approximately 300 Nm maximum input torque • Approximate dry weight 79 kg • Approximate oil capacity 9.2 litres.

The 5HP19 is fitted to selected BMW 3-Series, 5-Series and Z4 applications, with specifications varying by vehicle and production date. The VIN, complete transmission number, OEM gearbox code and individual component identification should always be confirmed before ordering replacement parts.

Common Faults

Common 5HP19 problems include valve-body and solenoid wear, hydraulic pressure loss, torque-converter lock-up wear and internal clutch or drum failure. Symptoms can include harsh or delayed shifts, shift flare, slipping, converter judder, incorrect gears, loss of drive and failsafe operation.

Torque-converter and hydraulic-control problems can cause lock-up shudder, slipping and poor shift quality, while internal clutch wear can result in ratio errors or loss of individual gears. Diagnosis should include fault codes, hydraulic operation, converter function and fluid condition before major components are replaced.

Common Fault Codes