40 Drivetrain parts are listed for the 2021 BMW X3, in 13 part types, covering all 3 engine options (2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged and 3.0L L6 Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 BMW X3, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 19 parts of the 40 listed are Drive Shaft (8 parts), CV Axle (7 parts) and Axle Shaft Seal (4 parts). The other 10 part types cover the remaining 21 parts.
The 2021 BMW X3 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
13 brands supply drivetrain parts for the 2021 BMW X3, led by REIN (6 parts), VAICO (6 parts) and TIMKEN (5 parts), plus 10 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 BMW X3. 2 parts have it, including APWI BM8357 (CV Axle) and TOP NOTCH TN10072 (CV Axle). Each part number opens a page with every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 2.0L L4 Turbocharged | 12021750 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| TIMKEN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | SL260472 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| TIMKEN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 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 are listed for the 2021 BMW X3, from TIMKEN and AJUSA.
Listed part numbers: AJUSA 12021750, TIMKEN SL260472 and TIMKEN SL260162, plus the other parts above.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APWI Popular Fits: 3.0L L6 Turbocharged | BM8357 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| TOP NOTCH Popular Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | TN10072 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| APWI Fits: 3.0L L6 Turbocharged | BM8358 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| GSP Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | NCV27091 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| TOP NOTCH Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | TN10073 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | BM8207 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 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.
7 CV Axle parts are listed for the 2021 BMW X3, from APWI, TOP NOTCH, TRAKMOTIVE and 1 other brand. APWI BM8357 carries the "Popular" badge.
Listed part numbers: APWI BM8357, TOP NOTCH TN10072 and APWI BM8358, plus the other parts above.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 16031150 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontAWD | 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.
One part is listed for the 2021 BMW X3 — AJUSA 16031150.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | HWP0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear DifferentialM22X1.5, Steel | View on Amazon |
| REIN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | HWU0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear DifferentialM22X1.5, Aluminum | View on Amazon |
This table covers the Differential Fill drain plugs.
REIN supplies both parts for the 2021 BMW X3.
This group includes REIN HWP0065 and REIN HWU0065.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 2.0L L4 Turbocharged | 12005350 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear45x75x10mm | View on Amazon |
| AJUSA Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 12015650 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontAWD | View on Amazon |
| TIMKEN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | SL260487 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontxDrive30i | 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 are listed for the 2021 BMW X3, from AJUSA and TIMKEN.
This group includes AJUSA 12005350, AJUSA 12015650 and TIMKEN SL260487 and the remaining parts above.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 729370 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Height [MM]: 10Swirl Type: Right-hand Twist | View on Amazon |
| ELRING Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 761160 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Material: ACM (Polyacrylate)Radial Shaft Seal Design: AS | View on Amazon |
| ELRING Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | B16790 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Material: AEM (Ethylene Acrylate Rubber)Swirl Type: Alternating Twist | View on Amazon |
| ELRING Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | B46610 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
4 Differential Seal parts for the 2021 BMW X3 come from ELRING.
Listed part numbers: ELRING 729370, ELRING 761160 and ELRING B16790, plus the other parts above.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CARDONE Fits: 2.0L L4 Turbocharged | 657049 | 🇺🇸 US 🇨🇦 CA | FrontxDrive30i | View on Amazon |
| DORMAN Fits: 3.0L L6 Turbocharged | 966449 | 🇺🇸 US 🇨🇦 CA | Length: 50.375" | View on Amazon |
| DORMAN Fits: 3.0L L6 Turbocharged | 986999 | 🇺🇸 US 🇨🇦 CA | Length: 50.5" | View on Amazon |
| VAICO Fits: 2.0L L4 Turbocharged | V204440 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| VAICO Fits: 2.0L L4 Turbocharged | V204441 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| VAICO Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | V204442 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | xDrive30iFront Left | View on Amazon |
| VAICO Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | V204443 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | xDrive30iFront Right | View on Amazon |
| VAICO Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | V204449 | 🇺🇸 US 🇨🇦 CA | xDrive30iFront Left | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
8 Drive Shaft parts for the 2021 BMW X3 come from 3 brands — VAICO, DORMAN and CARDONE.
Part numbers include CARDONE 657049, DORMAN 966449 and DORMAN 986999, among others listed above.
Drive Shaft Center Support Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | BEM0039P | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 55mm O.D., 30mm I.D. | View on Amazon |
This table covers the Drive Shaft Center Support bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
This group shows a single part: REIN BEM0039P.
Drive Shaft Flex Joint
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAE Fits: 2.0L L4 Turbocharged | FJC0107 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| AAE Fits: 3.0L L6 Turbocharged | FJC0118 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | M Competition or M ModelTo 12/20 | View on Amazon |
| VAICO Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | V204995 | 🇺🇸 US 🇨🇦 CA | Grade: OEThickness: 30 MM | View on Amazon |
This table covers the flex joints in the driveshaft.
3 Drive Shaft Flex Joint parts are listed for the 2021 BMW X3, from AAE and VAICO.
Part numbers include AAE FJC0107, AAE FJC0118 and VAICO V204995.
Drive Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | B15590 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Flange Sealor SDRIVE20IBody code: G01 | View on Amazon |
This table covers the seals at the Drive Shaft. 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.
One part is listed for the 2021 BMW X3 — ELRING B15590.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 915052 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | 915053 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Quart Flex Fill | View on Amazon |
This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle.
VALVOLINE supplies both parts for the 2021 BMW X3.
Part numbers include VALVOLINE 915052 and VALVOLINE 915053.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | FLDF005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AWDTF0870 | View on Amazon |
This table covers the fluids specified for the transfer case. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable.
One part is listed for the 2021 BMW X3 — REIN FLDF005.
Transfer Case Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | HWP0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AWDM22x1.5, Steel | View on Amazon |
| REIN Fits: 2.0L L4 Turbocharged, 3.0L L6 Turbocharged | HWU0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AWDM22x1.5, Aluminum | View on Amazon |
This table covers the Transfer Case Oil drain plugs.
REIN supplies both parts for the 2021 BMW X3.
This group includes REIN HWP0065 and REIN HWU0065.
Buying Drivetrain Parts for a 2021 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. Every drivetrain part here is 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: Drive Shaft and CV Axle .
Frequently Asked Questions
How many drivetrain parts fit the 2021 BMW X3?
Our catalog currently lists 40 drivetrain parts for the 2021 BMW X3 across 13 subcategories and 13 brands, covering all 3 engine options (2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged and 3.0L L6 Turbocharged). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 BMW X3 engines?
Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 2021 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 2021 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 2021 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 2021 BMW X3
Drivetrain Parts for Other BMW X3 Years
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