This page lists 8 belt drive parts for the 2021 BMW M5, across 2 part types, covering the 4.4L V8 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 BMW M5, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. All 8 listed parts are Belt (7 parts) and Belt Tensioner (1 part).
Every part on this page is matched to the 4.4L V8 Turbocharged — the only engine offered in the 2021 BMW M5.
The most listed brands for 2021 BMW M5 belt drive parts are DAYCO (2 parts), CONTINENTAL (2 parts) and GATES (1 part), plus 3 more brands. Quality grades include Standard Replacement and Economy.
2 parts on this 2021 BMW M5 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GATES K070640 (Belt) and CONTINENTAL 4070640 (Belt). Click any part number to see every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | K070640 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
| DAYCO | 5070640DR | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Drive Rite®Serpentine | View on Amazon |
| FVP | 640K7 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular | 4070640 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| ACDELCO | 7K640 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| CONTINENTAL | 7PK1629 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Metric LineSerpentine | View on Amazon |
| DAYCO | 5070640 | 🇺🇸 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 are listed for the 2021 BMW M5, from DAYCO, CONTINENTAL, GATES and 2 other brands. GATES K070640 carries the "Popular" badge.
In the Economy grade, GATES, DAYCO and FVP supply 3 parts: the catalog's value-priced group. A representative part number is GATES K070640.
The Standard Replacement section lists 4 options from CONTINENTAL, ACDELCO and DAYCO — built to original-equipment specification. CONTINENTAL 4070640 is listed in this group.
Part numbers include GATES K070640, DAYCO 5070640DR and FVP 640K7, among others listed above.
Belt Tensioner
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 11287549873 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Pulley | 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.
This group shows a single part: ÜRO PARTS 11287549873.
Buying Belt Drive Parts for a 2021 BMW M5
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- Confirm you have the 4.4L 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 and Belt Tensioner .
Frequently Asked Questions
How many belt drive parts fit the 2021 BMW M5?
Our catalog currently lists 8 belt drive parts for the 2021 BMW M5 across 2 subcategories and 6 brands, covering the 4.4L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of belt drive problems on a 2021 BMW M5?
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 BMW M5 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 BMW M5?
Every part on this page is matched to the 4.4L 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 2021 BMW M5
Belt Drive Parts for Other BMW M5 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.