Add products by adding codes
Adapter kit BMW M20 M21 - BMW ZF 8HP 8HP75 8HP70 8HP50
- Adapter enabling the connection (swap / conversion) of a BMW M20 M21 engine with a BMW-derived 8-speed ZF 8HP automatic transmission (ZF Friedrichshafen).

PMC Motorsport Aluminum Gearbox Adapter BMW M20 M21 - ZF 8HP 8HP50 8HP51 8HP70 8HP75 (BMW inline-six) / ZF GS6-53DZ / GS6-37DZ
Do you want to pair the BMW M20 M21 engine with the ultra-fast ZF 8HP automatic transmission? Our gearbox adapter is the perfect solution for you. Aluminum adapter designed to connect ZF 8HP 8HP70 8HP75 8HP50 8HP51 (6-bolt) and the 6-speed manual ZF GS6-53DZ / GS6-37DZ gearbox.
PMC Motorsport gearbox adapters are a synonym for precision and the highest quality. The design process based on 3D scanning and inspection using a measuring arm ensures a perfect fit. Production on modern CNC machines guarantees ideal axial alignment of the engine and gearbox, which is crucial for the durability of the drivetrain.
Our entire production and R&D department are located in Poland. More than 90% of the components are manufactured by our company.
Selection assistance and after-sales support - PMC Motorsport Support
The PMC Motorsport team will help you choose the right kit for you. In case of any doubts during installation, they will provide technical support. You can contact us via the contact form.
Individual component purchase
Our offer includes every element of our kit, which can be purchased separately.
Thousands of manufactured adapters and satisfied customers worldwide.
PMC Motorsport adapters are used in both daily cars and professional projects intended for motorsport.
From the beginning, we focus on the quality of the parts we manufacture. Every element is inspected after each stage of production. Every component produced by us is engraved with a production serial number.
Quality confirmed by ISO certificate PN-EN ISO 9001:2015
We ship our products to almost every country in the world. Shipping costs for European Union countries (excluding islands) and the UK are calculated automatically. For countries not on the list, our team will calculate shipping costs after the order is placed and add them to the order. You will receive an email with the order cost.
NOTE: The provided shipping quote along with the product price does not include additional fees / customs duties that may occur depending on the destination country.
0% VAT
0% VAT for customers with an active European VAT ID (option for B2B customers outside Poland) and for export outside the EU.
After positive verification in the VIES system, we modify the order by removing the charged VAT.
| Compatible engines: |
BMW BMW M20 M20B20 M20B23 M20B25 M20B27 BMW M21 M21D24W M21D24WA |
| Compatible gearboxes: |
ZF 8HP 8HP70 8-speed ZF 8HP 8HP70 GA8HP70 BMW N57 N57n (Diesel) ZF 8HP 8HP75X 8HP75Z 8-speed ZF 8HP 8HP75 GA8HP75X BMW N57 N57n (Diesel) ZF 8HP 8HP75Z GA8HP75Z / 8HP75 BMW B57 B57B30 (Diesel) ZF 8HP 8HP76X 8HP76Z 8-speed ZF 8HP 8HP76X 8HP76Z / 8HP76 BMW B57 B57B30 (Diesel) ZF 8HP 8HP76X 8HP76Z / 8HP76 BMW S58 S58B30 ZF 8HP 8HP50 8HP51Z 8-speed ZF 8HP 8HP51Z GA8HP51Z / 8HP51 BMW B58 B58B30 ZF 8HP 8HP51Z GA8HP51Z / 8HP51 BMW B48 B48B20 ZF 8HP 8HP51Z GA8HP51Z / 8HP51 BMW B46 B46B20ZF ZF 8HP 8HP70X 8HP70Z 8-speed (xDrive) ZF 8HP 8HP70X GA8HP70X BMW N57 N57n (Diesel) ZF 8HP 8HP75X 8HP75Z 8-speed (xDrive) ZF 8HP 8HP75X GA8HP75X BMW N57 N57n (Diesel) |
| Compatible manual gearboxes: |
ZF (ZF Friedrichshafen) S6-53 GS6-53DZ 6-speed ZF S6-53 GS6-53DZ HGD (THGD) BMW E60 530D M57N M57N2 ZF S6-53 GS6-53DZ JGA (TJGA) BMW E60 530D M57N M57N2 ZF S6-53 GS6-53DZ HGU (THGU) BMW E9x 330D 325D M57N2 ZF S6-53 GS6-53DZ HGK (THGK) BMW E9x 330D 325D M57N2 ZF S6-53 GS6-53DZ JGL(TJGL) BMW E9x 330D N57N ZF S6-53 GS6-53DZ HS1 (THS1) BMW F10 530D N57N ZF S6-53 GS6-53DZ HB7 (THB7) BMW F10 530D N57N ZF S6-53 GS6-53DZ HAF (THAF) BMW F10 530D N57N ZF S6-53 GS6-53DZ JGG (TJGG) BMW N47S E8x 123D ZF S6X53 GS6X53DZ HGE (THGE) BMW E60 530D M57N M57N2 ZF S6X53 GS6X53DZ JGB (TJGB) BMW E60 530D M57N M57N2 ZF S6X53 GS6X53DZ HGW (THGW) BMW E9x 330D 325D M57N2 ZF S6X53 GS6X53DZ HGL (THGL) BMW E9x 330D 325D M57N2 ZF S6X53 GS6X53DZ JGJ (TJGJ) BMW E9x 330D N57N ZF (ZF Friedrichshafen) S6-45 GS6-45DZ 6-speed ZF GS6-45DZ BMW N47 N47S1 N47N N57 ZF GS6X45DZ BMW N47 N47S1 N47N N57 ZF (ZF Friedrichshafen) S6-37 GS6-37DZ 6-speed ZF GS6-37DZ BMW N47 ZF GS6X37DZ BMW N47 S6X37 |
Additional Information
PMC Motorsport parts are intended for motorsport. For use on racing tracks.
Parts are intended for installation by professionals with knowledge of engine SWAPs and car modifications - in workshops and using tools appropriately adapted for this purpose.
The adapter installation manual contains only basic knowledge necessary for the physical connection of the engine with the gearbox outside the car body.
Depending on the car, additional modifications may occur, such as: fitting mounts, bushings, engine firewall, gearbox tunnel, driveshaft length, etc.
Our adapters are made from materials that are fully recyclable.


FAQ
1. How to connect a ZF 8HP converter with a BMW M20 M21 engine?
To connect the BMW M20 M21 engine with a ZF 8HP automatic gearbox converter from a BMW (inline engine version), you must use the PMC Motorsport gearbox adapter and an OE flexplate (BMW OE 11 22 8 506 670 / 11 22 8506670 / OE 11 22 8 612 144 / 11 22 8612144 (not included)) along with the converter from your 8HP 6-bolt gearbox. No additional converter adapter is needed.
2. Which starter motor should be used for the ZF 8HP conversion with the BMW M20 M21 engine?
Thanks to the PMC Motorsport gearbox adapter, there is no need to replace the starter; the OE starter from the BMW M50-M57 remains (grinding of the starter housing is required).
3. Which flywheel should be used for connection with the GS6 manual gearbox?
To connect the BMW M20 M21 engine with a 6-speed manual gearbox, a custom flywheel must be used (not available in the PMC offer).










