This page lists 31 drivetrain parts for the 2020 BMW 440I, across 5 part types, covering the 3.0L L6 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
The drivetrain system on the 2020 BMW 440I moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (19 parts), CV Joint Boot (6 parts) and Axle Shaft Seal (4 parts). The other 2 part types cover the remaining 2 parts.
Every part on this page is matched to the 3.0L L6 Turbocharged — the only engine offered in the 2020 BMW 440I.
The most listed brands for 2020 BMW 440I drivetrain parts are TOP NOTCH (6 parts), TRAKMOTIVE (6 parts) and GSP (5 parts), plus 5 more brands. Quality grades include Standard Replacement and Premium.
6 parts on this 2020 BMW 440I page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TOP NOTCH TN10036PR (CV Axle) and REIN BKN0116 (CV Joint Boot). Click any part number to see every vehicle that part fits.
Axle Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | HWB1067 | 🇺🇸 US 🇨🇦 CA | Front440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
This table covers the Axle bolts.
This group shows a single part: REIN HWB1067.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 12021750 | 🇺🇸 US 🇨🇦 CA | Rear440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| TIMKEN | SL260472 | 🇺🇸 US 🇨🇦 CA | Rear440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| TIMKEN | SL260162 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| TIMKEN | SL260496 | 🇺🇸 US 🇲🇽 MX | Rear440i Base Model or 440i Gran Coupe | 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 440I come from 2 brands — TIMKEN and AJUSA.
Listed part numbers: AJUSA 12021750, TIMKEN SL260472 and TIMKEN SL260162, plus the other parts above.
CV Axle
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular | TN10036PR | 🇺🇸 US 🇨🇦 CA | Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular | TN10035 | 🇺🇸 US 🇨🇦 CA | Front Left440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| TOP NOTCH Popular | TN10036 | 🇺🇸 US 🇨🇦 CA | Front Right440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| TOP NOTCH Popular | TN10028 | 🇺🇸 US 🇨🇦 CA | Rear Right440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| GKN | 306358 | 🇺🇸 US 🇨🇦 CA | Front Left440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| GKN | 306359 | 🇺🇸 US 🇨🇦 CA | Front Right440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| GSP | NCV27043 | 🇺🇸 US 🇨🇦 CA | Front Left440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| GSP | NCV27044 | 🇺🇸 US 🇨🇦 CA | Front Right440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| GSP | NCV27030 | 🇺🇸 US 🇨🇦 CA | Rear Left440i xDrive Gran Coupe | View on Amazon |
| GSP | NCV27031 | 🇺🇸 US 🇨🇦 CA | Rear Right440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| GSP | NCV27035 | 🇺🇸 US 🇲🇽 MX | Rear Left440i Base Model or 440i Gran Coupe | View on Amazon |
| TOP NOTCH | TN10027 | 🇺🇸 US 🇨🇦 CA | Rear Left440i xDrive Gran Coupe | View on Amazon |
| TOP NOTCH | TN10030 | 🇺🇸 US 🇲🇽 MX | Rear Left440i Base Model or 440i Gran Coupe | View on Amazon |
| TRAKMOTIVE | BM8166 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AAR Joint Design | View on Amazon |
| TRAKMOTIVE | BM8164 | 🇺🇸 US 🇲🇽 MX | AAR Joint Design | View on Amazon |
| TRAKMOTIVE | BM8177 | 🇺🇸 US 🇲🇽 MX | Rear Right440i Base Model | View on Amazon |
| TRAKMOTIVE | BM8171 | 🇺🇸 US 🇨🇦 CA | Rear Left440i xDrive Base Model | View on Amazon |
| TRAKMOTIVE | BM8178 | 🇺🇸 US 🇲🇽 MX | Rear Left440i Base Model | View on Amazon |
| TRAKMOTIVE | BM8172 | 🇺🇸 US 🇨🇦 CA | Rear Right440i xDrive Base Model | 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.
19 CV Axle parts for the 2020 BMW 440I come from 4 brands — TOP NOTCH, TRAKMOTIVE, GSP and 1 other brand. The "Popular" part is TOP NOTCH TN10036PR.
In the Premium grade, TOP NOTCH supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is TOP NOTCH TN10036PR.
In the Standard Replacement grade, TRAKMOTIVE, TOP NOTCH, GSP and 1 other brand supply 18 parts: built to original-equipment specification. A representative part number is TOP NOTCH TN10035.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Popular | BKN0116 | 🇺🇸 US 🇨🇦 CA | Front Inner440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| REIN Popular | BKN0099R | 🇺🇸 US 🇨🇦 CA | Front Outer440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| BECK/ARNLEY | 1032966 | 🇺🇸 US 🇨🇦 CA | Front Inner440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| BECK/ARNLEY | 1032804 | 🇺🇸 US 🇨🇦 CA | Front Outer440i xDrive Base Model or 440i xDrive Gran Coupe | View on Amazon |
| GKN | 305846 | 🇺🇸 US 🇨🇦 CA | Thermoplastic ElastomerThermosplastic Elastomer (TPE) | View on Amazon |
| GKN | 306058 | 🇺🇸 US 🇨🇦 CA | Thermoplastic ElastomerThermosplastic Elastomer (TPE) | View on Amazon |
This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
6 CV Joint Boot parts for the 2020 BMW 440I come from 3 brands — REIN, BECK/ARNLEY and GKN. The "Popular" part is REIN BKN0116.
Part numbers include REIN BKN0116, REIN BKN0099R and BECK/ARNLEY 1032966, among others listed above.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 16031150 | 🇺🇸 US 🇨🇦 CA | Front440i xDrive Base Model or 440i xDrive Gran Coupe | 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.
Buying Drivetrain Parts for a 2020 BMW 440I
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Confirm you have the 3.0L L6 Turbocharged engine — every part on this page is matched to it.
- 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 CV Joint Boot .
Frequently Asked Questions
How many drivetrain parts fit the 2020 BMW 440I?
Our catalog currently lists 31 drivetrain parts for the 2020 BMW 440I across 5 subcategories and 8 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2020 BMW 440I?
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 440I 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 440I?
Every part on this page is matched to the 3.0L L6 Turbocharged engine. 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 440I
Drivetrain Parts for Other BMW 440I 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.