This page lists 13 drivetrain parts for the 2026 BMW X7, across 10 part types, covering both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
The drivetrain system on the 2026 BMW X7 moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Differential Fill / Drain Plug (2 parts), Gear Oil (2 parts) and Transfer Case Oil Drain Plug (2 parts). The other 7 part types cover the remaining 7 parts.
The 2026 BMW X7 was sold with both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. 12 parts fit every engine; the other 1 is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2026 BMW X7 drivetrain parts are REIN (7 parts), AJUSA (2 parts) and VALVOLINE (2 parts), plus 2 more brands.
Each part number listed for the 2026 BMW X7 opens a page with every vehicle that part fits.
Axle Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: all 2026 X7 engines | HWB1067 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Frontwith Spring, 16x1.5x72mm | View on Amazon |
This table covers the Axle bolts.
This group shows a single part: REIN HWB1067.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: all 2026 X7 engines | 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: all 2026 X7 engines | HWP0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear DifferentialM22X1.5, Steel | View on Amazon |
| REIN Fits: all 2026 X7 engines | HWU0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear DifferentialM22X1.5, Aluminum | View on Amazon |
This table covers the Differential Fill drain plugs.
2 Differential Fill / Drain Plug parts for the 2026 BMW X7 come from REIN. Every part fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged.
Listed part numbers: REIN HWP0065 and REIN HWU0065.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: all 2026 X7 engines | 12015650 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front44x69x10/15mm | 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.
This group shows a single part: AJUSA 12015650.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 4.4L V8 Turbocharged | 966547 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Length: 60.75"OE Fix | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
One part is listed for the 2026 BMW X7 — DORMAN 966547.
Drive Shaft Center Support Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: all 2026 X7 engines | 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.
One part is listed for the 2026 BMW X7 — REIN BEM0039P.
Drive Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: all 2026 X7 engines | B15590 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Flange Seal | 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.
This group shows a single part: ELRING B15590.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: all 2026 X7 engines | 915052 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: all 2026 X7 engines | 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.
2 Gear Oil parts for the 2026 BMW X7 come from VALVOLINE. Every part fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged.
This group includes VALVOLINE 915052 and VALVOLINE 915053.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: all 2026 X7 engines | FLDF005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | TF08701 Liter | 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.
This group shows a single part: REIN FLDF005.
Transfer Case Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: all 2026 X7 engines | HWP0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | M22x1.5, Steel | View on Amazon |
| REIN Fits: all 2026 X7 engines | HWU0065 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | M22x1.5, Aluminum | View on Amazon |
This table covers the Transfer Case Oil drain plugs.
2 Transfer Case Oil Drain Plug parts for the 2026 BMW X7 come from REIN. Every part fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged.
This group includes REIN HWP0065 and REIN HWU0065.
Buying Drivetrain Parts for a 2026 BMW X7
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: Differential Fill / Drain Plug and Gear Oil .
Frequently Asked Questions
How many drivetrain parts fit the 2026 BMW X7?
Our catalog currently lists 13 drivetrain parts for the 2026 BMW X7 across 10 subcategories and 5 brands, covering both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2026 BMW X7 engines?
Some do. 12 parts fit every engine; the other 1 is 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 2026 BMW X7?
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 2026 BMW X7 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 2026 BMW X7?
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 2026 BMW X7
Drivetrain Parts for Other BMW X7 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.