2018-2024 BMW X3/X4 Bumper Reinforcement Bar / Impact Beam Rear 51127400008
OEM Part #: 51-12-7-400-008 (51127400008)
Actual photo
The exact part you’ll receive — not a stock photo.
$179.99
Side: Rear
Used
Donor2019 BMW X3 · 2.0L
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Genuine OEM Used
SKU: 705716
Donor Vehicle: 2019 BMW X3 · 2.0L
3 photos
$179.99
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BMW rear bumper reinforcement bar (impact beam), OEM part number 7400008, is a used genuine part. Also called a bumper impact beam, it mounts across the rear of the vehicle to provide structural support for the bumper cover. This reinforcement bar fits various 2.0L and 3.0L turbocharged engines, including mild-hybrid and plug-in hybrid variants. A bent or cracked reinforcement bar can cause the bumper to sit unevenly after a rear collision.
Specifications
| Fits Vehicle Model | X3, X4 |
| Fits Vehicle Make | BMW |
| OEM Part No | 51-12-7-400-008 (51127400008) |
| Side | Rear |
| Category | Bumpers |
Compatible Vehicles
Fits 37 vehicle configurations across 1 make, 2018-2024.
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 37 vehicle configurations — 11 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2024 | BMW | X3 | SUV | 3.0L l6 Turbo | 2022-24 30I W/M PKG, M40I |
| 2023 | BMW | X3 | SUV | 2.0L l4 Turbo | 2022-24 30I W/M PKG, M40I |
| 2023 | BMW | X3 | SUV | 3.0L l6 Turbo | 2022-24 30I W/M PKG, M40I |
| 2024 | BMW | X3 | SUV | 2.0L l4 Turbo | 2022-24 30I W/M PKG, M40I |
| 2021 | BMW | X3 | SUV | 2.0L l4 Turbo | 2018-21 W/M TYPE |
| 2022 | BMW | X3 | SUV | 2.0L l4 Turbo | 2022-24 30I W/M PKG, M40I |
| 2024 | BMW | X3 | SUV | 3.0L l6 Turbo | 2022-24 M MODEL |
| 2021 | BMW | X3 | SUV | 2.0L l4 Turbo | w/o xDRIVE 30eX, 2018-21 W/O M TYPE |
| 2019 | BMW | X3 | SUV | 2.0L l4 Turbo | 2018-21 W/M TYPE |
| 2020 | BMW | X3 | SUV | 2.0L l4 Turbo | 2018-21 W/M TYPE |
| 2024 | BMW | X4 | SUV | 3.0L l6 Turbo | 2022-24 M, M COMPETITION W/M TYPE |
| 2020 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2023 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2022 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2020 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2021 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2019 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2018 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2022 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2021 | BMW | X3 | SUV | 2.0L l4 Turbo | |
| 2021 | BMW | X4 | SUV | 3.0L l6 Turbo | |
| 2019 | BMW | X3 | SUV | 2.0L l4 Turbo | |
| 2018 | BMW | X3 | SUV | 2.0L l4 Turbo | |
| 2020 | BMW | X3 | SUV | 2.0L l4 Turbo | |
| 2022 | BMW | X3 | SUV | 2.0L l4 Turbo | |
| 2021 | BMW | X3 | SUV | 3.0L l6 Turbo | |
| 2022 | BMW | X4 | SUV | 2.0L l4 Turbo | |
| 2023 | BMW | X4 | SUV | 2.0L l4 Turbo | |
| 2020 | BMW | X4 | SUV | 3.0L l6 Turbo | |
| 2023 | BMW | X4 | SUV | 3.0L l6 Turbo | |
| 2022 | BMW | X4 | SUV | 3.0L l6 Turbo | |
| 2024 | BMW | X4 | SUV | 3.0L l6 Turbo | |
| 2019 | BMW | X4 | SUV | 3.0L l6 Turbo | |
| 2024 | BMW | X4 | SUV | 2.0L l4 Turbo | |
| 2021 | BMW | X4 | SUV | 2.0L l4 Turbo | |
| 2019 | BMW | X4 | SUV | 2.0L l4 Turbo | |
| 2020 | BMW | X4 | SUV | 2.0L l4 Turbo |