12 Drivetrain parts are listed for the 2025 Audi A4 Allroad, in 5 part types, covering the 2.0L L4 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2025 Audi A4 Allroad, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 10 parts of the 12 listed are CV Joint Boot (4 parts), Drive Shaft (3 parts) and Transfer Case Fluid (3 parts). The other 2 part types cover the remaining 2 parts.
The 2025 Audi A4 Allroad came with a single engine, the 2.0L L4 Turbocharged, and every part is verified against it.
4 brands supply drivetrain parts for the 2025 Audi A4 Allroad, led by GKN (6 parts), VAICO (4 parts) and BECK/ARNLEY (1 part), plus 1 more brand.
Each part number listed for the 2025 Audi A4 Allroad opens a page with every vehicle that part fits.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN | GKND12939 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2025 Audi A4 Allroad — GKN GKND12939.
CV Joint
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN | 306277 | 🇺🇸 US 🇨🇦 CA | Pre-lubricatedThermosplastic Elastomer (TPE) | View on Amazon |
This table covers the constant-velocity joints at each end of a drive axle.
One part is listed for the 2025 Audi A4 Allroad — GKN 306277.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1033141 | 🇺🇸 US 🇨🇦 CA | Front Outer | View on Amazon |
| GKN | 306313 | 🇺🇸 US 🇨🇦 CA | OUTER Diameter 1.023 InThermoplastic Elastomer | View on Amazon |
| GKN | 306188 | 🇺🇸 US 🇨🇦 CA | OUTER Diameter 1.063 InThermoplastic Elastomer | View on Amazon |
| REIN | BKN0109 | 🇺🇸 US 🇨🇦 CA | Front Outer | 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.
4 CV Joint Boot parts are listed for the 2025 Audi A4 Allroad, from GKN, BECK/ARNLEY and REIN.
This group includes BECK/ARNLEY 1033141, GKN 306313 and GKN 306188 and the remaining parts above.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN | GKNP20085 | 🇺🇸 US 🇨🇦 CA | RearBasic Rear Differential | View on Amazon |
| GKN | GKNP20091 | 🇺🇸 US 🇨🇦 CA | Rearwith uncoupling rear differential | View on Amazon |
| VAICO | V107729 | 🇺🇸 US 🇨🇦 CA | Length: 463From 06/27/2022 | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
3 Drive Shaft parts for the 2025 Audi A4 Allroad come from 2 brands — GKN and VAICO.
Listed part numbers: GKN GKNP20085, GKN GKNP20091 and VAICO V107729.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VAICO | V600430 | 🇺🇸 US 🇨🇦 CA | Transfer Case Oil DTF-1 L | View on Amazon |
| VAICO | V600431 | 🇺🇸 US 🇨🇦 CA | Grade: AMTransfer Case Fluid, DTF-1 - 5 Liter | View on Amazon |
| VAICO | V600432 | 🇺🇸 US 🇨🇦 CA | 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.
VAICO supplies the 3 Transfer Case Fluid parts for the 2025 Audi A4 Allroad.
Part numbers include VAICO V600430, VAICO V600431 and VAICO V600432.
Buying Drivetrain Parts for a 2025 Audi A4 Allroad
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 2.0L L4 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 Joint Boot and Drive Shaft .
Frequently Asked Questions
How many drivetrain parts fit the 2025 Audi A4 Allroad?
Our catalog currently lists 12 drivetrain parts for the 2025 Audi A4 Allroad across 5 subcategories and 4 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2025 Audi A4 Allroad?
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 2025 Audi A4 Allroad 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 2025 Audi A4 Allroad?
Every part on this page is matched to the 2.0L L4 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 2025 Audi A4 Allroad
Drivetrain Parts for Other Audi A4 Allroad Years
Switch vehicle or jump to a subcategory
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.