The Worlds ONLY BMW N54/N55 6HP28 Transmission Adapter Kits
New Version 4.0 Available Now - Free Shipping USA (Lower 48)
BMW N54 N55 E-Series - E9X, E8x, E6x - RWD & AWD Compatibility
Comprehensive Product Design, Premium Materials, Direct Customer Service
What to know...
The 6HP28 is nearly twice as strong as an OEM Spec E-Series 6HP21.
Utilizes readily available RWD & AWD 6HP28 Transmissions.
These 6HP28s are found in BMW 335D, X5D and similar M57N2 3.0 Diesel Models.
OEM integration Utilizing Bosch Gen 2 ZF6HP28 TCU & custom transmission tune.
Custom Tuning Support courtesy of xHP Flashtool & Sutphin Tuning.
No standalone TCU or wiring required; Optional Aftermarket Standalone TCU Choices Available
1 to 2 Day conversion process make it easy to get back on the road quick!
Nearly Identical to OEM Transmission Replacement - Professional Shop & DIY Friendly.
On Call Tech Support - We work hard to provide the best customer service & support.
Conversion Kit comes complete with everything needed to install the new transmission!
Reuse your OEM flexplate, starter motor, driveshaft/differential & AWD Transfer Case.
No fabrication, transmission tunnel modification, or guesswork involved.
Keep your existing transmission cooler setup or consult with us to easily upgrade.
No matter your setup we have you covered with our included Custom Transmission Fittings & 8AN PTFE Line Kit.
BIG POWER reliability with room to GROW utilizing shared Racing components from the Ford 6R80 Transmission.
Built Options for 1000+ ft-lbs of TQ; Upgraded Clutch Packs, Billet Internals, High Stall Converter, Launch Control.
With proper cooling, maintenance & fluid choice ZF 6HP Transmissions can outperform OEM Torque Ratings by up to ~50%.
xHP rates their 6HP28 Stage 2 tune at 737 ft-lb/1000 Nm; Stage 3 tunes have torque limit removed!
In stock form the 6HP28 can handle 600 to 800 ft-lb/813 to 1088 Nm with ease.
ZF OEM Torque Rating Comparison
6HP19 Gen 1 295 ft-lb/400 Nm
6HP19Z/21 Gen 2 332 ft-lb/450 Nm
6HP26 Gen 1 443 ft-lb/600 Nm
6HP26Z/28 Gen 2 516 ft-lb/700 Nm
Nearly 100 kits sold in first 2 years with 100% customer satisfaction rate!
"Thank you for the opportunity to earn your business."
Joshua Armstrong - Owner - Guru Autowerks LLC
Helpful Information to Provide for Inquiries
Vehicle Year, Make & Model or VIN Number
Primary use; Daily or Weekend Street Cruiser? or Dedicated Race/Track Car?
Current Estimated Power & Future Goals?
Current Turbo Setup & PSI?
Stock Transmission Cooler or Other?
Stock Driveshaft & Differential or Other?
Stock Transmission Tune or Other?
OEM DME/ECU or Standalone? Current Engine Tuner?
Are you currently having transmission issues?
Slipping, Shift Issues, DTC Codes, Limp Mode etc?
If so please briefly describe your current problems.
Guru Autowerks LLC
Houston, TX USA - Custom Auto Parts & Accessories
Transmission Adapters, Cooler Components and More.
In-House 3D Scan, Design & Prototype Process
Need a Custom Part made? Inquire today!