MFactory Helical LSD Differential - Bmw E39 520D 525I 530I 535I 95-03 Manual
MFactory Helical Limited Slip Differential. Gain a prominent advantage over the competition with this LSD. Through Smooth and consistent distribution of power to the wheels the LSD puts power-to-the-ground and maximises your vehicles traction. A must for any FWD car be it road, drag or track!
Made from imported Japanese steel these diffs are 'forged' and 'cryo-tempered' for unsurpassed toughness. They are designed to withstand the extreme shock loads of competition-level drag racing. Advanced gear geometry designed using industry-leading software puts more power to the ground and the highest quality Brighton-Best hardware is used. Maintenance-free gears eliminates the need for special fluids & rebuilds associated with plate-type LSDs. Lock-free operation ensures no adverse affect to steering response.
When installing your MFactory Helical LSD, only use Torco Manual Transmission Fluid (MTF). This is the only oil MFactory recommend. It is also recommended to install new diff bearings.
MFACTORY BMW FITMENT GUIDE
E36/E39/E46 All Fitments - THE LSD IS A DIRECT BOLT ON REPLACEMENT
E8X/E9X/E60 non 35-i - THE LSD IS A DIRECT BOLT ON REPLACEMENT
E8X/E9X/E60 35i AT - THE LSD IS A DIRECT BOLT ON REPLACEMENT
E8X/E9X/E60 35i MT < 03/2007 (inc. 335d) - THE LSD IS A DIRECT BOLT ON REPLACEMENT
E8X/E9X/E60 35i MT > 03/2007 (inc. 335d) - THE LSD REQUIRES EITHER THE OE CROWN WHEEL TO BE WELDED TO IT OR A NEW MFACTORY FINAL DRIVE FITTED (MF-TRS-02E25, MF-TRS-02E28, MF-TRS-02E31)
E8X/E9X/E60 35i DCT - THE LSD REQUIRES EITHER THE OE CROWN WHEEL TO BE WELDED TO IT OR A NEW MFACTORY FINAL DRIVE FITTED (MF-TRS-02E25, MF-TRS-02E28, MF-TRS-02E31)
F20/F30 All Fitments - THE LSD REQUIRES EITHER THE OE CROWN WHEEL TO BE WELDED TO IT OR A NEW MFACTORY FINAL DRIVE FITTED (MF-TRS-02E25, MF-TRS-02E28, MF-TRS-02E31)
WELDING FINAL DRIVES
It's not as simple as machining off the oem ring gear and welding it onto to the LSD:
1) Machine off oem ring gear
2) Machine the surface flat
3) Machine bolt holes into ring gear
4) Machine spacer (with bolt holes) so that the ring gear sits at the same height on the LSD vs oem Diff
Alternatively, you can purchase our final drive which bolts straight onto our LSD and doesn't require any spacers.