BMW LSD 215K / 215L – E46, E90, E60, E39 Limited Slip Differential
BMW LSD 215K / 215L – E46, E90, E60, E39 Limited Slip Differential, RacingDiffs part no. RD1019, RD1009. It is a complete clutch-type limited slip differential unit that replaces the open or worn factory differential carrier.
Key Features
- Fully forged construction: Both internals and housing are forged for supreme strength and durability.
- Adjustable ramp settings: Three lock profiles to match driving style: 30/30 — aggressive 2-way for drifting.
- 30/60: versatile 1.5-way for hill climb, rally, circuit, time attack, and new drifters.
- 50/65: smooth engagement for street and track days.
- Premium clutch pack: 4 × molybdenum-ceramics clutch plates with Lifetime Warranty .
- Optimized NVH: Correct preload + high-quality LSD oil (e.g., Ravenol Racing 75W-140) for noise- and vibration-free operation.
Technical Specs
| Spec | Value |
|---|---|
| Differential types | BMW 215K / 215L |
| Ramp options | 30/30 (2-way), 30/60 (1.5-way), 50/65 (smooth lock) |
| Clutch pack | 4 × molybdenum-ceramics plates (Lifetime Warranty) |
| Mandatory Oil Requirement | Ravenol Racing 75W-140 (or equivalent) |
| Backlash target | 0.08–0.12 mm on most BMW ring-and-pinion sets |
Installation Notes
- Carrier-adjustment C-clips required: Needed to set preload and backlash correctly.
- C-clips let you: Dial factory backlash, center the ring gear for a proper contact pattern, and eliminate whine, heat, and premature wear.
- TIP: We stock complete C-clip packs in 0.1 mm increments for precise setup.
- Watch before you wrench: Our 13-minute installation video covers bearing pressing, backlash measurement (dial indicator), C-clip selection, and contact-pattern checks with marking compound.
Fitment
- E82: 135i N54
- E46: 330d
- E90 / E91 / E92 / E93: 335d, 335i, 335xi
- E39: 530d, 540i, 540iP
- E60 / E61: 540i, 545i, 550i
- E63 / E64: 645Ci, 650i
- E38: 740i, 740iL, 750i, 750iL
- E65: 730d, 735i, 740d, 745d, 745i, 750i, 760i
- E53: 4.8is
- E52: Z8
Versions
| Gear ratio | Part number |
|---|---|
| 2.56 and lower | RD1019 |
| 2.81 and higher | RD1009 |
Specifications
| Spec | Value |
|---|---|
| Brand | RacingDiffs |
| Part number | RD1019, RD1009 |
| Weight | 13,8 kg |
RacingDiffs
Founded in Belgium, RacingDiffs is a specialist developer of limited slip differential conversions and upgrades for popular rear-wheel-drive platforms. Their bolt-in LSD kits convert open differentials into performance units without a full housing swap — a cost-effective solution for track day and drift enthusiasts seeking better traction and balance.
Official page: racingdiffs.com
Official page: racingdiffs.com
BMW LSD 215K / 215L – E46, E90, E60, E39 Limited Slip Differential
1,692.79€
Excl. VAT: 1,399.00€
Tags: RS-RD-RD1019,