19 Belt drive parts are listed for the 2021 Audi A7, in 3 part types, covering all 3 engine options (2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged and 3.0L V6 Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
The belt drive system on the 2021 Audi A7 spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. All 19 listed parts are Belt (11 parts), Idler Pulley (6 parts) and Belt Tensioner (2 parts).
The 2021 Audi A7 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
8 brands supply belt drive parts for the 2021 Audi A7, led by GATES (5 parts), DAYCO (4 parts) and CONTINENTAL (3 parts), plus 5 more brands. Quality grades include Standard Replacement, Economy and Kit.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Audi A7. 4 parts have it, including GATES K040440 (Belt) and LITENS 900699A (Idler Pulley). Each part number opens a page with every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 3.0L V6 Turbocharged | K040440 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
| DAYCO Fits: 2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged | 5060450DR | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Drive Rite®Serpentine | View on Amazon |
| DAYCO Fits: 3.0L V6 Turbocharged | 5040440DR | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Drive Rite®Serpentine | View on Amazon |
| ROADMAX Fits: 3.0L V6 Turbocharged | 4K440AP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | V-RibbedSerpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular Fits: 3.0L V6 Turbocharged | 4PK1120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Metric LineSerpentine | View on Amazon |
| ACDELCO Fits: 3.0L V6 Turbocharged | 4K440 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| BANDO Fits: 3.0L V6 Turbocharged | 4PK1120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rib Quantity: 4 | View on Amazon |
| DAYCO Fits: 2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged | 5060450 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine | View on Amazon |
| DAYCO Fits: 3.0L V6 Turbocharged | 5040440 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine | View on Amazon |
| GATES Fits: 2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged | K060448EST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | E-Start Micro-V | View on Amazon |
| GATES Fits: 3.0L V6 Turbocharged | K060567EST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | E-Start 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.
11 Belt parts for the 2021 Audi A7 come from 6 brands — DAYCO, GATES, ROADMAX and 3 other brands. The "Popular" part is GATES K040440.
The Economy section lists 4 options from DAYCO, GATES and ROADMAX — the catalog's value-priced group. GATES K040440 is listed in this group.
In the Standard Replacement grade, DAYCO, GATES, CONTINENTAL and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is CONTINENTAL 4PK1120.
Belt Tensioner
Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LITENS Fits: 3.0L V6 Turbocharged | LV950699B | 🇺🇸 US | Kit | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 3.0L V6 Turbocharged | 39527 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Alternator | 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 are listed for the 2021 Audi A7, from LITENS and GATES.
In the Kit grade, LITENS supplies 1 part: grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. A representative part number is LITENS LV950699B.
The Standard Replacement section: 1 option from GATES. GATES 39527 is listed in this group.
Part numbers include LITENS LV950699B and GATES 39527.
Idler Pulley
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VAICO Fits: 3.0L V6 Turbocharged | V108921 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LITENS Popular Fits: 3.0L V6 Turbocharged | 900699A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| LITENS Popular Fits: 3.0L V6 Turbocharged | 900700A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| CONTINENTAL Fits: 3.0L V6 Turbocharged | 50099 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| CONTINENTAL Fits: 3.0L V6 Turbocharged | 50100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| GATES Fits: 3.0L V6 Turbocharged | 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 for the 2021 Audi A7 come from 4 brands — LITENS, CONTINENTAL, VAICO and 1 other brand. The "Popular" part is LITENS 900699A.
The Economy section: 1 option from VAICO. VAICO V108921 is listed in this group.
Standard Replacement: 5 parts, from LITENS, CONTINENTAL and GATES. A representative part number is LITENS 900699A.
This group includes LITENS 900699A, VAICO V108921 and LITENS 900700A and the remaining parts above.
Buying Belt Drive Parts for a 2021 Audi A7
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- Match the engine first. Every belt drive part here is 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 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 A7?
Our catalog currently lists 19 belt drive parts for the 2021 Audi A7 across 3 subcategories and 8 brands, covering all 3 engine options (2.0L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 Turbocharged and 3.0L V6 Turbocharged). Each part is matched to the engine(s) it fits.
Do belt drive parts differ between 2021 Audi A7 engines?
Yes. Every belt drive part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 belt drive problems on a 2021 Audi A7?
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 A7 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 A7?
First match the engine — each row shows which engine(s) the part fits. 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 A7
Belt Drive Parts for Other Audi A7 Years
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