2007-2008 BMW X3 Differential / Diff (4.44) Front 31507603002
OEM Part #: 31-50-7-603-002 (31507603002)
Actual photo
The exact part you’ll receive — not a stock photo.
$369.99
Side: Front
Used
Donor2008 BMW X3 · 3.0L
✓ Free Same Day Shipping on orders by noon CT
Only 1 in stock — no guaranteed restock
Genuine OEM Used
SKU: 704463
Donor Vehicle: 2008 BMW X3 · 3.0L
3 photos
$369.99
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
BMW Differential / Diff (4.44) OEM 7603002 is a used genuine front unit removed from a donor vehicle. Also supersedes 7544478. This 4.44-ratio diff was designed for the BMW X3's 3.0L naturally aspirated six-cylinder. A failing differential often produces a whining or howling noise during acceleration or turns.
Specifications
| Fits Vehicle Model | X3 |
| Fits Vehicle Make | BMW |
| OEM Part No | 31-50-7-603-002 (31507603002) |
| Compatible OEM Part No | 7544478 |
| Side | Front |
| Category | Differential |
Compatible Vehicles
Fits 2 vehicle configurations across 1 make, 2007-2008.
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 2 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2007 | BMW | X3 | SUV | 3.0L l6 | |
| 2008 | BMW | X3 | SUV | 3.0L l6 |