7 Belt drive parts are listed for the 2017 Audi S8, in 1 part type, covering the 4.0L V8 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The belt drive system on the 2017 Audi S8 spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. Every listed part is a Belt.
The 2017 Audi S8 came with a single engine, the 4.0L V8 Turbocharged, and every part is verified against it.
7 brands supply belt drive parts for the 2017 Audi S8, led by GATES (1 part), ROADMAX (1 part) and ULTRA-POWER (1 part), plus 4 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2017 Audi S8. 2 parts have it, including GATES K050385 (Belt) and ROADMAX 5K385AP (Belt). Each part number opens a page with every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | K050385 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
| ROADMAX Popular | 5K385AP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | V-RibbedSerpentine | View on Amazon |
| ULTRA-POWER | K050385 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 5K385 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| BANDO | 5PK985 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rib Quantity: 5 | View on Amazon |
| CONTINENTAL | 4050388 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| DAYCO | 5050390 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine | 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.
7 Belt parts for the 2017 Audi S8 come from 7 brands — GATES, ROADMAX, ULTRA-POWER and 4 other brands. The "Popular" part is GATES K050385.
The Economy section lists 3 options from GATES, ROADMAX and ULTRA-POWER — the catalog's value-priced group. GATES K050385 is listed in this group.
In the Standard Replacement grade, ACDELCO, BANDO, CONTINENTAL and 1 other brand supply 4 parts: built to original-equipment specification. A representative part number is ACDELCO 5K385.
Listed part numbers: GATES K050385 and ROADMAX 5K385AP, plus the other parts above.
Buying Belt Drive Parts for a 2017 Audi S8
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- 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 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 .
Frequently Asked Questions
How many belt drive parts fit the 2017 Audi S8?
Our catalog currently lists 7 belt drive parts for the 2017 Audi S8 across 1 subcategory and 7 brands, covering the 4.0L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of belt drive problems on a 2017 Audi S8?
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 2017 Audi S8 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 2017 Audi S8?
Every part on this page is matched to the 4.0L V8 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 2017 Audi S8
Belt Drive Parts for Other Audi S8 Years
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