This page lists 21 drivetrain parts for the 2020 Audi A5, across 6 part types, covering the 2.0L L4 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
The drivetrain system on the 2020 Audi A5 moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (6 parts), Drive Shaft (6 parts) and CV Joint Boot (3 parts). The other 3 part types cover the remaining 6 parts.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2020 Audi A5.
The most listed brands for 2020 Audi A5 drivetrain parts are GKN (8 parts), GSP (5 parts) and TOP NOTCH (3 parts), plus 3 more brands. Quality grades include Standard Replacement and Premium.
3 parts on this 2020 Audi A5 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TOP NOTCH TN19019PR (CV Axle) and GKN GKNP20085 (Drive Shaft). Click any part number to see every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN | SL260517 | 🇺🇸 US 🇨🇦 CA | Rear | 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.
This group shows a single part: TIMKEN SL260517.
CV Axle
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular | TN19019PR | 🇺🇸 US 🇨🇦 CA | Performance | View on Amazon |
| GSP | PR23025 | 🇺🇸 US 🇨🇦 CA | Performance Revolution | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular | TN19019 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| GSP | NCV23028 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| GSP | NCV23025 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| TOP NOTCH | TN19022 | 🇺🇸 US 🇨🇦 CA | 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 2020 Audi A5 come from 2 brands — TOP NOTCH and GSP. The "Popular" part is TOP NOTCH TN19019PR.
In the Premium grade, TOP NOTCH and GSP supply 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is TOP NOTCH TN19019PR.
In the Standard Replacement grade, TOP NOTCH and GSP supply 4 parts: built to original-equipment specification. A representative part number is TOP NOTCH TN19019.
Listed part numbers: TOP NOTCH TN19019PR, GSP PR23025 and TOP NOTCH TN19019, plus the other parts above.
CV Joint
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN | 306280 | 🇺🇸 US 🇨🇦 CA | Thermosplastic Elastomer (TPE) | View on Amazon |
| 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.
2 CV Joint parts for the 2020 Audi A5 come from GKN.
Listed part numbers: GKN 306280 and GKN 306277.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| 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 Outerwith PR Code GH4 | 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.
3 CV Joint Boot parts for the 2020 Audi A5 come from 2 brands — GKN and REIN.
Listed part numbers: GKN 306313, GKN 306188 and REIN BKN0109.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GKN Popular | GKNP20085 | 🇺🇸 US 🇨🇦 CA | RearCoupe | View on Amazon |
| GKN | GKNP20091 | 🇺🇸 US 🇨🇦 CA | RearCoupe | View on Amazon |
| GKN | GKNP20136 | 🇺🇸 US 🇨🇦 CA | RearA5 Quattro | View on Amazon |
| GKN | GKNP20148 | 🇺🇸 US 🇨🇦 CA | RearA5 Quattro | View on Amazon |
| GSP | PS901874 | 🇺🇸 US 🇨🇦 CA | RearA5 Sportback | View on Amazon |
| GSP | PS901876 | 🇺🇸 US | RearA5 Sportback | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
6 Drive Shaft parts are listed for the 2020 Audi A5, from GKN and GSP. GKN GKNP20085 carries the "Popular" badge.
Listed part numbers: GKN GKNP20085, GKN GKNP20091 and GKN GKNP20136, plus the other parts above.
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 | Coupe or HatchbackGrade: AM | View on Amazon |
| VAICO | V600432 | 🇺🇸 US 🇨🇦 CA | Coupe or HatchbackGrade: OEM | 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 2020 Audi A5 come from VAICO.
This group includes VAICO V600430, VAICO V600431 and VAICO V600432.
Buying Drivetrain Parts for a 2020 Audi A5
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 Axle and Drive Shaft .
Frequently Asked Questions
How many drivetrain parts fit the 2020 Audi A5?
Our catalog currently lists 21 drivetrain parts for the 2020 Audi A5 across 6 subcategories and 6 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 2020 Audi A5?
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 Audi A5 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 Audi A5?
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 2020 Audi A5
Drivetrain Parts for Other Audi A5 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.