Home › Swap guides › 5 Series E39
5 Series E39 LS swap
BMW · 1995–2003
Kits listed by vendorsE39
We haven't finished a sourced parts list for this vehicle yet. Below are the LS swap parts vendors list for it, plus the guides that apply to every LS swap.
Wiring harness options
Plug-and-play LS swap harnesses listed for this chassis by Wiring Specialties (prices as last checked). Pick the one that matches your engine (LS1 24x vs LS2/LS3 58x) and throttle type — see tuning.
We may earn a commission when you buy through links on this page.
| Harness | Throttle | Price | |
|---|---|---|---|
| BMW E39 LS1 Swap Wiring Harness | $1,369 checked 2026-09-29 | Check price & fitment | |
| BMW E39 LS3 Swap Wiring Harness | Drive-by-wire | $1,549 checked 2026-09-29 | Check price & fitment |
What the sources say about the E39
- Sikky's Stage 3 E39 wiring packages list 520i/523i/525i/528i/530i/535i six-cylinder models and also 540i/M5 eight-cylinder models as selectable chassis variants.
- Sikky's standalone E39 LS motor mounts are machined 6061-T6 billet aluminum with captured urethane bushings and hardware, and they fit only OEM inline-six chassis/subframes - not the 540i or M5.
- The Sikky E39 pan is designed to use the LS3 dipstick and tube (OEM GM tube 12625031, stick 12669528) and requires the OEM F-body Camaro pickup tube part 12558251.
- Sikky's E39 pan instructions state to ensure there is at least a 3/8-inch gap between the bottom of the pickup tube and the oil pan.
- Sikky's E39 crossmember and Stage packages support T56, T56 Magnum, CD009 and TR6060; a T56 Magnum XL has also been documented in an E39 M5 build using an Anchor #2369 transmission mount.
- FABbot also lists an older-generation clutch hydraulic feed line kit for 1965-1997 BMW applications, which the vendor references for E28, E34 and E39 LS swaps.
- The E39 I6 front subframe and rack-and-pinion steering is the preferred starting point; fitting a 540i/M5 V8 car requires subframe conversion, and Sikky's standalone mounts do not fit 540/M5 chassis.
- Sikky's E39 mid-sump pan is designed to fit around the front subframe of the BMW E39 5 Series chassis when using a Sikky mount kit.
Questions about this swap
Every LS swap also needs
An oil pan that clears
Compare GM LS pans by sump position and depth.
Accessory drive spacing
F-body, car, truck and Corvette offsets.
Fuel system sizing
Injector and pump sizing for your power goal.
A harness, computer and tune
VATS delete, 24x vs 58x, drive-by-wire, harness makers.
A transmission
4L60E to 8HP70 behind an LS.
Sources
- Stage 1 E39 LS Motor & Transmission Mount Kit — Sikky Manufacturing
- Stage 3 E39 LS1 Swap & Wiring Package — Sikky Manufacturing
- Sikky BMW E39 LS Motor Mounts — Sikky Manufacturing
- 65-97 BMW AR5/T56 Clutch Hydraulic Feed Line Kit — FABbot
- Sikky Manufacturing - BMW E39 LSx Swap Mid Sump Oil Pan Kit (SM-OP006B — Drift HQ