2018-2023 BMW X3/X4 Engine / Fuel Injector Wiring Harness 12518658838

OEM Part #: 12-51-8-658-838 (12518658838)

Engine / Fuel Injector Wiring Harness 12518658838 for BMW

Actual photo

The exact part you’ll receive — not a stock photo.

$46.99

Used

Donor2019 BMW X4 · 2.0L · 82k miles

SKU: 536665 · 30-Day Returns

✓ Free Same Day Shipping on orders by noon CT

3 Available — Select Your Part:

Engine / Fuel Injector Wiring Harness 12518658838 — Used (SKU 536665)

Genuine OEM Used SKU: 536665 Donor Vehicle: 2019 BMW X4 · 2.0L · 82k miles 2 photos

$46.99

30-Day Returns

Engine / Fuel Injector Wiring Harness 12518658838 — Used (SKU 705725)

Genuine OEM Used SKU: 705725 Donor Vehicle: 2019 BMW X3 · 2.0L 2 photos

$49.49

30-Day Returns

Engine / Fuel Injector Wiring Harness 12518658838 — Used (SKU 623832)

Genuine OEM Used SKU: 623832 Donor Vehicle: 2019 BMW X3 · 2.0L 2 photos

$55.49

30-Day Returns

Genuine OEM — real photos
30-day returns on eligible parts
eBay Top Rated · 100,000+ positive ratings
Ships from our own indoor warehouse

This used OEM Engine / Fuel Injector Wiring Harness (BMW part number 8658838, also replaces 12518658838) connects the fuel injectors to the engine control system. Also known as an engine wiring harness, it is designed for BMW X3 and X4 models with the 2.0L turbocharged four-cylinder engine. A failing injector harness can cause misfires, rough idle, or injector circuit faults.

Specifications

Specifications for Engine / Fuel Injector Wiring Harness 12518658838
Fits Vehicle Model	X3, X4
Fits Vehicle Make	BMW
OEM Part No	12-51-8-658-838 (12518658838)
Compatible OEM Part No	12-51-8-658-838
Category	Wiring / Harness

Compatible Vehicles

Fits 10 vehicle configurations across 1 make, 2018-2023.

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.

BMW

X3 2018-2022 · 5 variants
X4 2019-2023 · 5 variants

View all 10 vehicle configurations

Full vehicle fitment list for Engine / Fuel Injector Wiring Harness 12518658838
Year	Make	Model	Trim	Engine
2022	BMW	X3	SUV	2.0L l4 Turbo
2020	BMW	X3	SUV	2.0L l4 Turbo
2018	BMW	X3	SUV	2.0L l4 Turbo
2019	BMW	X3	SUV	2.0L l4 Turbo
2021	BMW	X3	SUV	2.0L l4 Turbo
2022	BMW	X4	SUV	2.0L l4 Turbo
2023	BMW	X4	SUV	2.0L l4 Turbo
2020	BMW	X4	SUV	2.0L l4 Turbo
2019	BMW	X4	SUV	2.0L l4 Turbo
2021	BMW	X4	SUV	2.0L l4 Turbo