This page lists 20 belt drive parts for the 2021 Audi Q8, across 3 part types, covering the 3.0L V6 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
The belt drive system on the 2021 Audi Q8 spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. All 20 listed parts are Belt (12 parts), Idler Pulley (6 parts) and Belt Tensioner (2 parts).
Every part on this page is matched to the 3.0L V6 Turbocharged — the only engine offered in the 2021 Audi Q8.
The most listed brands for 2021 Audi Q8 belt drive parts are CONTINENTAL (5 parts), GATES (4 parts) and DAYCO (3 parts), plus 7 more brands. Quality grades include Standard Replacement and Economy.
5 parts on this 2021 Audi Q8 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including CONTINENTAL 440K4MK (Belt) and LITENS 900699A (Idler Pulley). Click any part number to see every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular | 440K4MK | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mileage MakerSerpentine | View on Amazon |
| GATES Popular | K040440 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
| DAYCO | 5040440DR | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Drive Rite®Serpentine | View on Amazon |
| FVP | 440K4 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| ROADMAX | 4K440AP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | V-RibbedSerpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular | 4040440 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| ACDELCO | 4K440 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| BANDO | 4PK1120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rib Quantity: 4 | View on Amazon |
| CONTINENTAL | 4PK1120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Metric LineSerpentine | View on Amazon |
| DAYCO | 5040440 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine | View on Amazon |
| DAYCO | 5060564 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine | View on Amazon |
| GATES | K060565 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
This table covers the serpentine and accessory belts that drive the front accessories. Typical signs include squeal on cold start, cracks across the ribs, or glazing on the back of the belt. A new belt on a worn tensioner will squeal within weeks — spin the idlers by hand while the belt is off.
12 Belt parts are listed for the 2021 Audi Q8, from CONTINENTAL, DAYCO, GATES and 4 other brands. CONTINENTAL 440K4MK carries the "Popular" badge.
In the Economy grade, CONTINENTAL, GATES, DAYCO and 2 other brands supply 5 parts: the catalog's value-priced group. A representative part number is CONTINENTAL 440K4MK.
The Standard Replacement section lists 7 options from CONTINENTAL, DAYCO, ACDELCO and 2 other brands — built to original-equipment specification. CONTINENTAL 4040440 is listed in this group.
Belt Tensioner
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 39527 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine | View on Amazon |
| VNE | 30021934 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mubea | View on Amazon |
This table covers the automatic tensioners that hold belt tension. Typical signs include belt flutter, a chirp that returns after a new belt, or a damper that no longer holds the arm. Replace the tensioner with the belt at higher mileage; the labor overlaps almost entirely.
2 Belt Tensioner parts for the 2021 Audi Q8 come from 2 brands — GATES and VNE.
This group includes GATES 39527 and VNE 30021934.
Idler Pulley
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VAICO | V108921 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LITENS Popular | 900699A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| LITENS Popular | 900700A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| CONTINENTAL | 50099 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| CONTINENTAL | 50100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| GATES | 36901 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
This table covers the idler pulleys the belt wraps around. Typical signs include a chirp that follows engine speed, or a pulley that feels rough or has play. Replace a noisy idler with the belt — the labor is already paid for.
6 Idler Pulley parts are listed for the 2021 Audi Q8, from LITENS, CONTINENTAL, VAICO and 1 other brand. LITENS 900699A carries the "Popular" badge.
Economy: 1 part, from VAICO. A representative part number is VAICO V108921.
The Standard Replacement section: 5 options from LITENS, CONTINENTAL and GATES. LITENS 900699A is listed in this group.
This group includes LITENS 900699A, VAICO V108921 and LITENS 900700A and the remaining parts above.
Buying Belt Drive Parts for a 2021 Audi Q8
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- Confirm you have the 3.0L V6 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 tensioner and idler pulleys with any belt at higher mileage — the labor overlaps almost entirely.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Belt and Idler Pulley .
Frequently Asked Questions
How many belt drive parts fit the 2021 Audi Q8?
Our catalog currently lists 20 belt drive parts for the 2021 Audi Q8 across 3 subcategories and 10 brands, covering the 3.0L V6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of belt drive problems on a 2021 Audi Q8?
Common symptoms include squealing on cold start, a belt that shows cracking or glazing, or an accessory that slows under load. 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 tensioner and idler pulleys with any belt at higher mileage — the labor overlaps almost entirely.
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 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 Q8?
Every part on this page is matched to the 3.0L V6 Turbocharged engine. Then a new belt on a worn tensioner will squeal within weeks — check tensioner damping and idler bearings while the belt is off. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Audi Q8
Belt Drive Parts for Other Audi 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.