Driveshaft Adapter BMW N54 N55 B58 8HP 105MM Bolt Circle | ASE

• Designed for 135i/335i transmissions (N54/N55), B58-based 8HP transmissions
• 105MM Bolt Circle Diameter
• This will not work with the stock driveshaft, it is for a one piece driveshaft with a 1310 (Dana Spicer 2-2-479) & 1350 (Dana Spicer 3-2-119) rear flanges
• With this adapter, we can make you a driveshaft to fit your custom 1 piece shaft
• 2.75" Center Pilot
• 10x1.5mm U-Joint Mounting Holes
• 12x1.75mm Transmission Mounting Holes
• All 12.9 Hardware Included to attach differential and driveshaft

Check your bolt circle before ordering

ASE lists driveshaft adapters in several bolt circle diameters and they are not interchangeable. This one is 105mm, for N54/N55 135i and 335i transmissions and B58-based 8HP units. The 96mm version covers E36, E46, Z3, six-cylinder E39 and B48-based 8HP50 transmissions. Measure your output flange bolt circle rather than going by chassis alone.

This requires a custom driveshaft

The adapter will not work with a stock driveshaft. It is designed for a one-piece shaft with 1310 or 1350 rear flanges. ASE can build a driveshaft to suit — steel or aluminum, both on 3" tube, or carbon, typically built in 2–3 days.