2014-2021 BMW Electric Motor Wiring Harness / Loom 12518653789
OEM Part #: 12-51-8-653-789 (12518653789)
Actual photo
The exact part you’ll receive — not a stock photo.
$26.49
Used
Donor2014 BMW i3 · 0.6L · 70k miles
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Genuine OEM Used
SKU: 284647
Donor Vehicle: 2014 BMW i3 · 0.6L · 70k miles
2 photos
$26.49
30-Day Returns
Genuine OEM Used
SKU: 526114
Donor Vehicle: 2015 BMW i3 · 0.6L · 56k miles
3 photos
HAS A CRACKED PLUG, SEE PICTURES
$40.49
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- Genuine OEM — real photos
- 30-day returns on eligible parts
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This used OEM Electric Motor Wiring Harness / Loom (BMW part number 8653789, also replaces 7636973) connects the drive motor to the i3’s hybrid battery and controller. Designed for the BMW i3 and i3s equipped with the 0.6L range-extender (REX) system, it carries power and sensor signals between components. A failing loom can cause intermittent motor operation, reduced power, or drivetrain warning lights—critical for maintaining full electric drive in the compact EV.
Specifications
| Fits Vehicle Model | i3 REx, i3s REx |
| Fits Vehicle Make | BMW |
| OEM Part No | 12-51-8-653-789 (12518653789) |
| Compatible OEM Part No | 7636973 |
| Category | Wiring / Harness |
Compatible Vehicles
Fits 8 vehicle configurations across 1 make, 2014-2021.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 8 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2014 | BMW | i3 REx | Hatchback | 0.6L l2 | |
| 2016 | BMW | i3 REx | Hatchback | 0.6L l2 | |
| 2015 | BMW | i3 REx | Hatchback | 0.6L l2 | |
| 2017 | BMW | i3 REx | Hatchback | 0.6L l2 | |
| 2019 | BMW | i3s REx | Hatchback | 0.6L l2 | |
| 2018 | BMW | i3s REx | Hatchback | 0.6L l2 | |
| 2020 | BMW | i3s REx | Hatchback | 0.6L l2 | |
| 2021 | BMW | i3s REx | Hatchback | 0.6L l2 |