SKU: 16-94-2655
PDS 8HP51 High Performance Billet Race Torque Converter – 26/55 Stator – AWD for 2018-2021 BMW M3/M4 xDrive
This PDS torque converter upgrades the ZF 8HP51 transmission in AWD BMW M3 and M4 models from 2018 to 2021. Built with billet components it handles extreme racing demands with a 5500 RPM stall speed for faster launches and better power transfer. Ideal for drag strip and track use where stock converters fail under high torque.
Key Features
- Billet 6061-T6 aluminum front cover: Resists flex and ballooning at high line pressures over 300 PSI for reliable high-horsepower operation
- Billet 4340 steel lockup piston: Provides precise clutch engagement and withstands aggressive driving without warping
- 26-spline input and 55-degree stator: Delivers 5500 RPM stall speed tuned for S55 engine peak torque in AWD setups
- Furnace-brazed poly-stage impeller and turbine: Increases fluid coupling efficiency and heat dissipation for consistent performance lap after lap
- Precision balanced assembly: Ensures smooth operation vibration-free up to 9000 RPM with anti-drainback valve to maintain prime
Product Notes
- Designed for racing applications core charge not required
- Break-in required with PDS TC fluid for 500 easy miles before full throttle use
- Special order item expect 3-5 week lead time from manufacturer
Installation Notes
- Professional installation recommended.
- Requires ZF 8HP51 transmission disassembly use OEM flexplate and pump stator support
- Compatible with stock mounting hardware torque converter bolts to 50 Nm
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2018-2020 | BMW | M3 | xDrive (F80) |
| 2018-2021 | BMW | M4 | xDrive (F82) |
| 2018-2021 | BMW | M4 | xDrive Convertible (F83) |
| 2018-2020 | BMW | M5 | xDrive (F90) |
Why Choose PDS?
- Specializes in custom torque converters for BMW M cars with proven drag racing wins
- Uses aerospace-grade materials and CNC machining for exact tolerances
- Hand-built and dyno-tested in the USA for consistent high-RPM durability
Frequently Asked Questions
- Q: Will this fit my 2019 BMW M4 xDrive Competition?
A: Yes it bolts directly to the ZF 8HP51 transmission in 2018-2021 F82 M4 xDrive models including Competition package with S55 engine - Q: What materials are used in construction?
A: Billet 6061-T6 aluminum cover billet 4340 steel piston and furnace-brazed steel elements for strength without excess weight at 32 lbs dry - Q: What is the warranty and break-in process?
A: 1-year unlimited mileage warranty with proper break-in of 500 easy miles using ATF approved for ZF transmissions
Shipping & Handling
- Method: UPS Ground or FedEx freight class 70
- Availability: Special order ships in 3-5 business days after order confirmation
- Packaging: Double-boxed protection 24 x 24 x 12 inches
- Weight: 32 lbs product 42 lbs shipping
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