The 2021 Audi E-Tron has 10 drivetrain parts with verified fitment on this page — 4 part types and 5 brands, covering the ELECTRIC engine. Each part includes a manufacturer part number and application notes.
The drivetrain system on the 2021 Audi E-Tron moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (6 parts), Differential Seal (2 parts) and CV Joint (1 part). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the ELECTRIC — the only engine offered in the 2021 Audi E-Tron.
The most listed brands for 2021 Audi E-Tron drivetrain parts are GSP (3 parts), TRAKMOTIVE (2 parts) and GKN (2 parts), plus 2 more brands.
2 parts on this 2021 Audi E-Tron page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GSP NCV23051 (CV Axle) and TOP NOTCH TN19039 (CV Axle). Click any part number to see every vehicle that part fits.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GSP Popular | NCV23051 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | View on Amazon |
| TOP NOTCH Popular | TN19039 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | View on Amazon |
| GSP | NCV23052 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| GSP | NCV23050 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| TRAKMOTIVE | AD86018 | 🇺🇸 US | AAR Joint Design | View on Amazon |
| TRAKMOTIVE | AD86019 | 🇺🇸 US | Rear | 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 2021 Audi E-Tron come from 3 brands — GSP, TRAKMOTIVE and TOP NOTCH. The "Popular" part is GSP NCV23051.
Listed part numbers: GSP NCV23051, TOP NOTCH TN19039 and GSP NCV23052, plus the other parts above.
CV Joint
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN | 306692 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front OuterLength 97 mm | View on Amazon |
This table covers the constant-velocity joints at each end of a drive axle.
This group shows a single part: GKN 306692.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN | 306707 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
This group shows a single part: GKN 306707.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | B09210 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear | View on Amazon |
| ELRING | B09220 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | 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 both parts for the 2021 Audi E-Tron.
Listed part numbers: ELRING B09210 and ELRING B09220.
Buying Drivetrain Parts for a 2021 Audi E-Tron
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 ELECTRIC 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 Differential Seal .
Frequently Asked Questions
How many drivetrain parts fit the 2021 Audi E-Tron?
Our catalog currently lists 10 drivetrain parts for the 2021 Audi E-Tron across 4 subcategories and 5 brands, covering the ELECTRIC engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2021 Audi E-Tron?
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 Audi E-Tron 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 Audi E-Tron?
Every part on this page is matched to the ELECTRIC 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 2021 Audi E-Tron
Drivetrain Parts for Other Audi E-Tron 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.