ZF 8HP50X

Transmission version

8 -speed automatic

Reference torque limit

Not separately verified

Manufacturer

ZF

BMW code reference

GA8HP50X

Excel gives 500 Nm for the 8HP50 family but does not verify a separate limit for the X version.

Gear ratios

BMW F21 M140i xDrive, 11/2018. BMW’s sheet uses the 8HP50 family designation; assignment to 8HP50X is a research mapping based on the workbook. View sources

Reverse is consistently shown with a negative sign; BMW data sheets give the magnitude of the ratio.

Fluid data

No separately verified fluid data is available for this exact version. Determine the fluid using the full transmission identifier and BMW requirements.

ZF identification

In this finder, 8HP50X denotes the all-wheel-drive version. Exact identification requires the full type, bill-of-materials number and BMW part number from the plate.

We have not yet verified a separate 8HP50X number prefix in the processed sources.

The GA8HP… code reference comes from the F21 workbook. The full plate and BMW part number must be checked separately; the code reference alone does not prove interchangeability.

Record the full marking on the transmission housing. ZF’s guide shows both plate and stamped identification variants.

Type designation

The exact type shown on the plate, including every suffix.

Full ZF catalogue number

Catalog Number / bill-of-materials number. The full number is required to identify parts.

Serial number

Serial Number. Identifies the individual unit; not the same as the transmission family code.

BMW / OE markings

Manufacturer part numbers and other codes on the plate. Available fields vary by version.

Label colour, casting marks and a suffix alone are insufficient for full identification. We do not use Excel’s general “X and Z = all-wheel drive” statement to identify the drivetrain.

Documented European applications (28)

F21, F22, F23, F30, F31, F36, F80, F87, G30 and F90 fitments come from research carried out by Six-In-Line Kft. in its spare time. Additional manufacturer sources and discrepancies are shown beside each result.