MFactory Helical LSD for the BMW M5 E39 with manual gearbox, 1998-2003

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The MFactory differential uses helical gears to move torque towards the wheel with grip, without clutch plates. It replaces the factory differential on the BMW M5 E39 with manual gearbox, 1998-2003.

Specifications

Brand MFactory
Code MF-TRS-05E39-5
Type Helical (Torsen-style) limited slip differential, no clutch plates
Material SAE 4320 and SAE 9310 steel, forged, double tempered and sub-zero treated
Surface Shot peened for surface hardness

Which cars it fits

  • BMW M5 E39 with manual gearbox, 1998-2003

What to check

  • There are no wearing plates: it needs no special oil and no periodic rebuild, unlike plate-type LSDs.
  • It works without locking, so steering response stays as it was with the factory differential.
  • Like any helical differential, it sends little torque when one wheel is in the air. Traction control covers this, and without it drivers use left-foot braking.