SIX-IN-LINE · TRANSMISSION CATALOGUE
ZF 8HP51X
ZF 8HP51X (GA8HP51X): 8-speed automatic transmission. Separate 8HP51X page with factory ratios for G30 530i xDrive and 520d xDrive. BMW uses the 8HP51 family designation; the X classification comes from the research dataset.
Separate 8HP51X page with factory ratios for G30 530i xDrive and 520d xDrive. BMW uses the 8HP51 family designation; the X classification comes from the research dataset.
This database is the result of research carried out by Six-In-Line Kft. in its spare time.
Technical data
- Transmission version
- 8 -speed automatic
- Reference torque limit
- Not separately verified
- Manufacturer
- ZF
- BMW code reference
- GA8HP51X
The reviewed factory sheets give no separate transmission torque limit. Engine and hybrid system torque are not such limits.
Gear ratios
Ratios come from the factory xDrive columns, rather than being inferred from the rear-wheel-drive version. View sources
| Gear | G30 530i xDrive / 520d xDrive · 11/2018 | Engaged clutches / brakesFamily reference · exact variant unverified |
|---|---|---|
| Torque limit | Nincs adat | — |
| 1 gear | 5,250 | A + B + Cfamily reference |
| 2 gear | 3,360 | A + B + Efamily reference |
| 3 gear | 2,172 | B + C + Efamily reference |
| 4 gear | 1,720 | B + D + Efamily reference |
| 5 gear | 1,316 | B + C + Dfamily reference |
| 6 gear | 1,000 | C + D + Efamily reference |
| 7 gear | 0,822 | A + C + Dfamily reference |
| 8 gear | 0,640 | A + D + Efamily reference |
| Reverse (R) | -3,712 | A + B + Dfamily reference |
Reverse is consistently shown with a negative sign; BMW data sheets give the magnitude of the ratio.
Fluid data
- ZF LifeguardFluid 8
ZF 50130 and TE-ML 11 list LifeguardFluid 8 for the named 8HP versions. Confirm the specification using the full transmission ID and BMW/OE part number; no fill quantity is inferred.
ZF fluids and oil change kitsZF identification
Ratios come from the factory sheet for the named BMW model. The ZF/BMW code mapping comes from the research dataset and must be checked on the actual vehicle.
Check the full type, HIS/IEP/X suffixes, ZF assembly number and BMW/OE part number together. A shared transmission family does not establish 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.
The prefix is not a complete order number and does not by itself confirm compatibility of the specific 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.
ZF manufacturer identification guide (Transmission ID Charts, PDF page 3)Documented European applications (9)
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.
9 view pairings
| Chassis / model | Engine code | Recorded period | Source |
|---|---|---|---|
| G30 · 520d Mild-Hybrid xDrive (190 LE / 140 kW) | 11.2019–06.2023 | B47D20O0 | 2019. 11. – 2023. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 520d xDrive (190 LE / 140 kW) | 09.2016–06.2023 | B47D20O0 | 2016. 09. – 2023. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 530i Mild-Hybrid xDrive (245 LE / 180 kW) | 05.2022–06.2023 | B48B20O0 | 2022. 05. – 2023. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 530i Mild-Hybrid xDrive (252 LE / 185 kW) | 07.2020–06.2023 | B48B20O0 | 2020. 07. – 2023. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 530i xDrive (245 LE / 180 kW) | 05.2022–06.2023 | B48B20O0 | 2022. 05. – 2023. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 530i xDrive (252 LE / 185 kW) | 09.2016–06.2020 | B48B20O0 | 2016. 09. – 2020. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 540i Mild-Hybrid xDrive (333 LE / 245 kW) | 07.2020–06.2023 | B58B30M0 | 2020. 07. – 2023. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 540i xDrive (340 LE / 250 kW) | 09.2016–06.2020 | B58B30M0 | 2016. 09. – 2020. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
| G30 · 540i xDrive (360 LE / 265 kW) | 09.2016–06.2020 | B58B30M0 | 2016. 09. – 2020. 06. | Six-In-Line Kft. – G30/F90 research conducted in spare time |
Partial coverage. Confirm the actual fitted transmission using the VIN or identification plate.
Sources and data status
Checked: 2026-10-07. Each source indicates which data it supports.
- Six-In-Line Kft. · G30/F90 research dataset
Model, engine and transmission codes, original AC labels and research uncertainties. Code mappings do not identify an individual VIN.
- BMW G30 · 11/2018 · PDF 1–2
Continental European 520i, 530i, 530i xDrive, 518d, 520d and 520d xDrive: 8HP51; 530d and 530d xDrive: 8HP75. BMW also uses family designations in the xDrive columns.
- ZF TE-ML 11 · 01.10.2026 · PDF 4–5
Manufacturer fluid list. Conventional 8HP and hybrid 8P75PH/8P75XPH are separate groups; select fluid by the vehicle manufacturer's part number.
- ZF 50130 HU · 11/2024 · PDF 2–3
8HP51/51X and 8HP76/76X HIS/IEP versions, 8HP75/75X and hybrid oil-change kits. A kit number is not a transmission assembly number.
Our research workbook: G30_F90_fejlesztoi_adatcsomag.xlsx. Code references from Excel do not constitute full manufacturer verification.
Always check the full manufacturer identifier and the actual version on your own transmission.
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