2018-2023 BMW X3/X4 Engine Valvetronic Wiring Harness 12519302478

OEM Part #: 12-51-9-302-478 (12519302478)

Engine Valvetronic Wiring Harness 12519302478 for BMW

Actual photo

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

$23.49

Used

Donor2019 BMW X4 · 2.0L · 82k miles

SKU: 536672 · 30-Day Returns

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Engine Valvetronic Wiring Harness 12519302478 — Used (SKU 536672)

Genuine OEM Used SKU: 536672 Donor Vehicle: 2019 BMW X4 · 2.0L · 82k miles 2 photos

$23.49

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A used OEM BMW Engine Valvetronic Wiring Harness (part number 9302478, also replaces 8658840) from a donor vehicle. This harness powers and communicates with the Valvetronic variable valve lift system on the 2.0L turbocharged four-cylinder (1998cc, DOHC). When failing, it can trigger a check engine light or cause rough idle, reduced power, and drivability issues.

Specifications

Specifications for Engine Valvetronic Wiring Harness 12519302478
Fits Vehicle Model	X3, X4
Fits Vehicle Make	BMW
OEM Part No	12-51-9-302-478 (12519302478)
Compatible OEM Part No	8658840
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 Valvetronic Wiring Harness 12519302478
Year	Make	Model	Trim	Engine
2019	BMW	X4	SUV	2.0L l4 Turbo
2022	BMW	X3	SUV	2.0L l4 Turbo
2020	BMW	X3	SUV	2.0L l4 Turbo
2021	BMW	X4	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
2018	BMW	X3	SUV	2.0L l4 Turbo