2018-2023 BMW X3/X4 Axle Differential / Diff (3.38) Front 31508679981

OEM Part #: 31-50-8-679-981 (31508679981)

$489.99
Side: Front Used
Donor2019 BMW X3 · 2.0L
SKU: 705717 · 30-Day Returns
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Axle Differential / Diff (3.38) 31508679981 — Used (SKU 705717)
Genuine OEM Used SKU: 705717 Donor Vehicle: 2019 BMW X3 · 2.0L 3 photos
$489.99
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A used OEM BMW front axle differential (3.38 ratio), OEM part number 8679981. This diff—also called the axle differential—was removed from a donor vehicle. It’s designed for BMW X3 and X4 models equipped with 2.0L or 3.0L turbocharged engines. As the front differential, it transfers power to the front wheels while allowing them to rotate at different speeds during turns. Common failure symptoms include whining or humming noises, clunking during acceleration or deceleration, and fluid leaks from the case or seals.

Specifications

Specifications for Axle Differential / Diff (3.38) 31508679981
Fits Vehicle ModelX3, X4
Fits Vehicle MakeBMW
OEM Part No31-50-8-679-981 (31508679981)
SideFront
CategoryDifferential

Compatible Vehicles

Fits 20 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 · 10 variants
  • X4 2019-2023 · 10 variants
View all 20 vehicle configurations
Full vehicle fitment list for Axle Differential / Diff (3.38) 31508679981
Year Make Model Trim Engine Note
2023 BMW X4 SUV 3.0L l6 Turbo
2019 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 2.0L l4 Turbo
2019 BMW X4 SUV 2.0L l4 Turbo
2021 BMW X4 SUV 2.0L l4 Turbo
2019 BMW X4 SUV 3.0L l6 Turbo
2022 BMW X4 SUV 3.0L l6 Turbo
2020 BMW X3 SUV 3.0L l6 Turbo
2021 BMW X3 SUV 3.0L l6 Turbo
2020 BMW X4 SUV 3.0L l6 Turbo
2018 BMW X3 SUV 3.0L l6 Turbo
2022 BMW X3 SUV 2.0L l4 Turbo
2021 BMW X4 SUV 3.0L l6 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 X3 SUV 3.0L l6 Turbo

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