21 Drivetrain parts are listed for the 2021 Audi A6, in 7 part types, covering both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
The drivetrain system on the 2021 Audi A6 moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Gear Oil (8 parts), CV Joint (3 parts) and Transfer Case Fluid (3 parts). The other 4 part types cover the remaining 7 parts.
The 2021 Audi A6 was sold with both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged. 8 parts fit every engine; the other 13 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Audi A6 drivetrain parts are VALVOLINE (8 parts), GKN (6 parts) and VAICO (3 parts), plus 3 more brands.
2 parts on this 2021 Audi A6 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including VALVOLINE VV982 (Gear Oil) and VALVOLINE VV975 (Gear Oil). Click any part number to see every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: 2.0L L4 Turbocharged | SL260526 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear LeftA6 Quattro | View on Amazon |
| TIMKEN Fits: all 2021 A6 engines | SL260529 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear RightA6 Quattro | 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.
2 Axle Shaft Seal parts for the 2021 Audi A6 come from TIMKEN. 1 part fits every engine; the other 1 is engine-specific.
Listed part numbers: TIMKEN SL260526 and TIMKEN SL260529.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN Fits: all 2021 A6 engines | GKND12332 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Outboard Joint Type: Fix Ball Joint GKN SX | View on Amazon |
| GKN Fits: 2.0L L4 Turbocharged | GKND12333 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Outboard Joint Type: Fix Ball Joint SX | 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.
2 CV Axle parts for the 2021 Audi A6 come from GKN. 1 part fits every engine; the other 1 is engine-specific.
Part numbers include GKN GKND12332 and GKN GKND12333.
CV Joint
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN Fits: all 2021 A6 engines | 306277 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pre-lubricatedThermosplastic Elastomer (TPE) | View on Amazon |
| GKN Fits: 2.0L L4 Turbocharged | 306278 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OUTER Diameter 3.701 In | View on Amazon |
| GKN Fits: all 2021 A6 engines | 306692 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Front Left OuterA6 Quattro | View on Amazon |
This table covers the constant-velocity joints at each end of a drive axle.
3 CV Joint parts for the 2021 Audi A6 come from GKN. 2 parts fit every engine; the other 1 is engine-specific.
Listed part numbers: GKN 306277, GKN 306278 and GKN 306692.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 2.0L L4 Turbocharged | 1033141 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front OuterA6 Quattro | View on Amazon |
| GKN Fits: all 2021 A6 engines | 306188 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OUTER Diameter 1.063 InThermoplastic Elastomer | 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.
2 CV Joint Boot parts for the 2021 Audi A6 come from 2 brands — BECK/ARNLEY and GKN. 1 part fits every engine; the other 1 is engine-specific.
This group includes BECK/ARNLEY 1033141 and GKN 306188.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.0L L4 Turbocharged | 852060 | 🇲🇽 MX | Height [MM]: 7Radial Shaft Seal Design: AS2W | 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.
One part is listed for the 2021 Audi A6 — ELRING 852060.
Gear Oil
SAE 75W-140
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 3.0L V6 Turbocharged | VV982 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 3.0L V6 Turbocharged | 889787 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Full Synthetic SAE 75W-14 0 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 3.0L V6 Turbocharged | 887344 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 3.0L V6 Turbocharged | VV981 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-14 0 Gear Oil5 Gallon | View on Amazon |
SAE 75W-90
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 3.0L V6 Turbocharged | VV975 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 3.0L V6 Turbocharged | 889785 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 3.0L V6 Turbocharged | 882505 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 3.0L V6 Turbocharged | 723856 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | 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.
8 Gear Oil parts for the 2021 Audi A6 come from VALVOLINE. The "Popular" part is VALVOLINE VV982.
The SAE 75W-140 section lists 4 options from VALVOLINE — grouped under the catalog's "SAE 75W-140" designation — the notes column spells out what sets them apart. VALVOLINE VV982 is listed in this group.
The SAE 75W-90 section lists 4 options from VALVOLINE — grouped under the catalog's "SAE 75W-90" designation — the notes column spells out what sets them apart. VALVOLINE VV975 is listed in this group.
Listed part numbers: VALVOLINE VV982, VALVOLINE 889787 and VALVOLINE 887344, plus the other parts above.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VAICO Fits: all 2021 A6 engines | V600430 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Transfer Case Oil DTF-1 L | View on Amazon |
| VAICO Fits: all 2021 A6 engines | V600431 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Engine Code DEYA or Engine Code DLHA or Engine Code DPAAGrade: AM | View on Amazon |
| VAICO Fits: all 2021 A6 engines | V600432 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Grade: OEMTransfer Case Oil DTF-1-20 L | 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.
3 Transfer Case Fluid parts for the 2021 Audi A6 come from VAICO. Every part fits both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged.
This group includes VAICO V600430, VAICO V600431 and VAICO V600432.
Buying Drivetrain Parts for a 2021 Audi A6
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: Gear Oil and CV Joint .
Frequently Asked Questions
How many drivetrain parts fit the 2021 Audi A6?
Our catalog currently lists 21 drivetrain parts for the 2021 Audi A6 across 7 subcategories and 6 brands, covering both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 Audi A6 engines?
Some do. 8 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 2021 Audi A6?
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 A6 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 A6?
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 Audi A6
Drivetrain Parts for Other Audi A6 Years
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