Spool Stage 2 Transmission DIY Parts Kit - ZF 8HP45/50/51
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: BMW B58 and Toyota GR Supra 3.0 with the ZF 8HP45, 8HP50 or 8HP51 automatic
- Free US shipping over $250
- 30-day returns on unused parts
- Fitment help before you buy
Spool Performance 8HP45, 8HP50, 8HP51 Stage 2 Upgraded Transmission DIY Parts Kit After over a year of rigorous testing, Spool Performance proudly presents our Stage 2 Transmission Kits for the 8HP45, 8HP50, and 8HP51 series transmissions. Engineered to surpass the limitations of stock components, these kits deliver an exceptional torque capacity of over 1000 ft-lbs. This comprehensive upgrade features advanced friction materials developed in-house, billet 7075 heat-treated and hard-anodized custom-designed C and E hubs, bespoke pressure plates, apply plates, and increased clutch counts for every clutch pack. Advanced Hub Design The C and E clutch hubs in the 8HP series are critical points of failure due to their OEM construction from weak, cast A380 aluminum.
Fits: BMW B58 and Toyota GR Supra 3.0 with the ZF 8HP45, 8HP50 or 8HP51 automatic
Brand: Spool Performance
BMW B58 and Toyota GR Supra 3.0 with the ZF 8HP45, 8HP50 or 8HP51 automatic
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M140i | F20/F21 | 2016–2019 | Gen 1 B58 | |
| M240i | F22/F23 | 2016–2021 | Gen 1 B58 | |
| 340i | F30/F31/F34 | 2016–2019 | Gen 1 B58 | |
| 440i | F32/F33/F36 | 2017–2020 | Gen 1 B58 | |
| 540i | G30/G31 | 2017–2019 | Gen 1 B58 | |
| 740i | G11/G12 | 2016–2019 | Gen 1 B58 | |
| X3 M40i | G01 | 2018–2019 | Gen 1 B58 | |
| M340i | G20/G21 | 2019+ | Gen 2 B58 (TU) | |
| M440i | G22/G23/G26 | 2021+ | Gen 2 B58 (TU) | |
| M240i | G42 | 2022+ | Gen 2 B58 (TU) | |
| Z4 M40i | G29 | 2019+ | Gen 2 B58 (TU) | |
| GR Supra 3.0 | A90/A91 | 2020+ | Gen 2 B58 (TU) | |
| 540i | G30/G31 | 2020–2023 | Gen 2 B58 (TU) | |
| 740i | G11/G12 | 2020–2022 | Gen 2 B58 (TU) | |
| X3 M40i | G01 | 2020+ | Gen 2 B58 (TU) |
Not sure? Email sales@b58racing.com with your VIN.
- Ships from the brand or distributor, usually in 3–7 business days.
- Free US shipping on orders over $250.
- Unused parts can be returned within 30 days. Some items are marked no-refund in their description.
Full details are on our shipping and returns page.
Pairs well with
Spool Aluminum High Capacity 8HP Transmission Oil Pan (+2 qt)
Spool 2021+ Mild Hybrid 8HP51 Oil Pan
SPL Parts Solid Differential Mount Bushings - A90 Supra / G29 Z4
