This page lists 23 drivetrain parts for the 2021 Audi RS Q8, across 6 part types, covering the 4.0L V8 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Audi RS Q8, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Most of the listed parts are Gear Oil (8 parts), Transfer Case Fluid (7 parts) and CV Axle (4 parts). The other 3 part types cover the remaining 4 parts.
The 2021 Audi RS Q8 came with a single engine, the 4.0L V8 Turbocharged, and every part is verified against it.
5 brands supply drivetrain parts for the 2021 Audi RS Q8, led by VALVOLINE (12 parts), GKN (4 parts) and VAICO (3 parts), plus 2 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Audi RS Q8. 4 parts have it, including VALVOLINE VV982 (Gear Oil) and VALVOLINE VV975 (Transfer Case Fluid). Each part number opens a page with every vehicle that part fits.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GSP | NCV23061 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| GSP | NCV23062 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| TOP NOTCH | TN19045 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| TOP NOTCH | TN19046 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | 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.
4 CV Axle parts are listed for the 2021 Audi RS Q8, from GSP and TOP NOTCH.
This group includes GSP NCV23061, GSP NCV23062 and TOP NOTCH TN19045 and the remaining 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.
One part is listed for the 2021 Audi RS Q8 — 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.
One part is listed for the 2021 Audi RS Q8 — GKN 306707.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN | GKNP20142 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearBasic Rear Differential | View on Amazon |
| GKN | GKNP20143 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rearwith torque vectoring rear differential | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
2 Drive Shaft parts for the 2021 Audi RS Q8 come from GKN.
This group includes GKN GKNP20142 and GKN GKNP20143.
Gear Oil
SAE 75W-140
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | VV982 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Quart | View on Amazon |
| VALVOLINE | 889787 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Full Synthetic SAE 75W-14 0 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE | 887344 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE | 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 | VV975 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE | 889785 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE | 882505 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE | 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.
VALVOLINE supplies the 8 Gear Oil parts for the 2021 Audi RS Q8. VALVOLINE VV982 carries the "Popular" badge.
In the SAE 75W-140 grade, VALVOLINE supplies 4 parts: grouped under the catalog's "SAE 75W-140" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE VV982.
In the SAE 75W-90 grade, VALVOLINE supplies 4 parts: grouped under the catalog's "SAE 75W-90" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE VV975.
Part numbers include VALVOLINE VV982, VALVOLINE 889787 and VALVOLINE 887344, among others listed above.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | VV975 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Popular | 889785 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VAICO | V600430 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Transfer Case Oil DTF-1 L | View on Amazon |
| VAICO | V600431 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Grade: AMTransfer Case Fluid, DTF-1 - 5 Liter | View on Amazon |
| VAICO | V600432 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Grade: OEMTransfer Case Oil DTF-1-20 L | View on Amazon |
| VALVOLINE | 882505 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE | 723856 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | 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.
7 Transfer Case Fluid parts are listed for the 2021 Audi RS Q8, from VALVOLINE and VAICO. VALVOLINE VV975 carries the "Popular" badge.
This group includes VALVOLINE VV975, VALVOLINE 889785 and VAICO V600430 and the remaining parts above.
Buying Drivetrain Parts for a 2021 Audi RS Q8
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 4.0L V8 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: Gear Oil and Transfer Case Fluid .
Frequently Asked Questions
How many drivetrain parts fit the 2021 Audi RS Q8?
Our catalog currently lists 23 drivetrain parts for the 2021 Audi RS Q8 across 6 subcategories and 5 brands, covering the 4.0L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2021 Audi RS Q8?
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 RS Q8 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 RS Q8?
Every part on this page is matched to the 4.0L V8 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 2021 Audi RS Q8
Drivetrain Parts for Other Audi RS Q8 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.