This page lists 22 drivetrain parts for the 2020 BMW X3, across 7 part types, covering both the 2.0L L4 Turbocharged and the 3.0L L6 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
The drivetrain system on the 2020 BMW X3 moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (6 parts), Axle Shaft Seal (4 parts) and Differential Pinion Seal (4 parts). The other 4 part types cover the remaining 8 parts.
The 2020 BMW X3 was sold with both the 2.0L L4 Turbocharged and the 3.0L L6 Turbocharged. 9 parts fit every engine; the other 13 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2020 BMW X3 drivetrain parts are TIMKEN (5 parts), AJUSA (4 parts) and ELRING (4 parts), plus 6 more brands.
2 parts on this 2020 BMW X3 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including APWI BM8357 (CV Axle) and TOP NOTCH TN10072 (CV Axle). Click any part number to see every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: all 2020 X3 engines | 12021750 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| TIMKEN Fits: all 2020 X3 engines | SL260472 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| TIMKEN Fits: all 2020 X3 engines | SL260162 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontAWD | View on Amazon |
| TIMKEN Fits: 3.0L L6 Turbocharged | SL260496 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits RearM40i Model | View on Amazon |
This table covers the seals where an axle shaft exits the housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
4 Axle Shaft Seal parts for the 2020 BMW X3 come from 2 brands — TIMKEN and AJUSA. 3 parts fit every engine; the other 1 is engine-specific.
This group includes AJUSA 12021750, TIMKEN SL260472 and TIMKEN SL260162 and the remaining parts above.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APWI Popular Fits: all 2020 X3 engines | BM8357 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| TOP NOTCH Popular Fits: all 2020 X3 engines | TN10072 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| APWI Fits: all 2020 X3 engines | BM8358 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| GSP Fits: all 2020 X3 engines | NCV27091 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| TOP NOTCH Fits: all 2020 X3 engines | TN10073 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| TRAKMOTIVE Fits: all 2020 X3 engines | BM8208 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AAR Joint Design | View on Amazon |
This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes.
6 CV Axle parts for the 2020 BMW X3 come from 4 brands — APWI, TOP NOTCH, GSP and 1 other brand. The "Popular" part is APWI BM8357. Every part fits both the 2.0L L4 Turbocharged and the 3.0L L6 Turbocharged.
Part numbers include APWI BM8357, TOP NOTCH TN10072 and APWI BM8358, among others listed above.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 3.0L L6 Turbocharged | 16031150 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontCover O-Ring | View on Amazon |
This table covers the gaskets that seal the Differential Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
This group shows a single part: AJUSA 16031150.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: 3.0L L6 Turbocharged | HWP0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Front DifferentialM22X1.5, Steel | View on Amazon |
| REIN Fits: 3.0L L6 Turbocharged | HWU0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Front DifferentialM22X1.5, Aluminum | View on Amazon |
This table covers the Differential Fill drain plugs.
2 Differential Fill / Drain Plug parts for the 2020 BMW X3 come from REIN.
Listed part numbers: REIN HWP0065 and REIN HWU0065.
Differential Pinion Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VNE Fits: 3.0L L6 Turbocharged | 4009837 | 🇺🇸 US 🇨🇦 CA | M40I ModelDrive Shaft Flex Disc | View on Amazon |
This table covers the flanges that connect the driveshaft to the differential pinion.
This group shows a single part: VNE 4009837.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 3.0L L6 Turbocharged | 12005350 | 🇺🇸 US 🇨🇦 CA | RearM40i Model | View on Amazon |
| AJUSA Fits: 3.0L L6 Turbocharged | 12015650 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front44x69x10/15mm | View on Amazon |
| TIMKEN Fits: 3.0L L6 Turbocharged | SL260487 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | View on Amazon |
| TIMKEN Fits: 3.0L L6 Turbocharged | SL260527 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits RearM40i Model | View on Amazon |
This table covers the seals at the differential pinion yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
4 Differential Pinion Seal parts for the 2020 BMW X3 come from 2 brands — AJUSA and TIMKEN.
Listed part numbers: AJUSA 12005350, AJUSA 12015650 and TIMKEN SL260487, plus the other parts above.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 3.0L L6 Turbocharged | 729370 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Height [MM]: 10Swirl Type: Right-hand Twist | View on Amazon |
| ELRING Fits: 3.0L L6 Turbocharged | 761160 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Material: ACM (Polyacrylate)Radial Shaft Seal Design: AS | View on Amazon |
| ELRING Fits: 3.0L L6 Turbocharged | B16790 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Material: AEM (Ethylene Acrylate Rubber)Swirl Type: Alternating Twist | View on Amazon |
| ELRING Fits: 3.0L L6 Turbocharged | B46610 | 🇺🇸 US 🇨🇦 CA | Material: ACM (Polyacrylate)Radial Shaft Seal Design: AwithBS2 | View on Amazon |
This table covers the seals at the Differential. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
ELRING supplies the 4 Differential Seal parts for the 2020 BMW X3.
Listed part numbers: ELRING 729370, ELRING 761160 and ELRING B16790, plus the other parts above.
Buying Drivetrain Parts for a 2020 BMW X3
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Some drivetrain parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: CV Axle and Axle Shaft Seal .
Frequently Asked Questions
How many drivetrain parts fit the 2020 BMW X3?
Our catalog currently lists 22 drivetrain parts for the 2020 BMW X3 across 7 subcategories and 9 brands, covering both the 2.0L L4 Turbocharged and the 3.0L L6 Turbocharged. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2020 BMW X3 engines?
Some do. 9 parts fit every engine; the other 13 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of drivetrain problems on a 2020 BMW X3?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2020 BMW X3 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2020 BMW X3?
First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2020 BMW X3
Drivetrain Parts for Other BMW X3 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.