18 Belt drive parts are listed for the 2021 BMW M2, in 4 part types, covering the 3.0L L6 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 BMW M2, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. 17 parts of the 18 listed are Idler Pulley (7 parts), Belt (6 parts) and Belt Tensioner (4 parts). The other 1 part type covers the remaining 1 part.
The 2021 BMW M2 came with a single engine, the 3.0L L6 Turbocharged, and every part is verified against it.
9 brands supply belt drive parts for the 2021 BMW M2, led by GATES (3 parts), CONTINENTAL (3 parts) and BANDO (2 parts), plus 6 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 BMW M2. 4 parts have it, including BANDO 8PK1395 (Belt) and CONTINENTAL 50069 (Idler Pulley). Each part number opens a page with every vehicle that part fits.
Belt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BANDO Popular | 8PK1395 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rib Quantity: 8 | View on Amazon |
| GATES Popular | K080547 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
| ACDELCO | 8K547 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| BANDO | 4PK685 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | V-RibbedRib Quantity: 4 | View on Amazon |
| CONTINENTAL | 4080550 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| DAYCO | 5080550 | 🇺🇸 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.
6 Belt parts for the 2021 BMW M2 come from 5 brands — BANDO, GATES, ACDELCO and 2 other brands. The "Popular" part is BANDO 8PK1395.
Listed part numbers: BANDO 8PK1395, GATES K080547 and ACDELCO 8K547, plus the other parts above.
Belt Tensioner
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | 39389 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL | 49841 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-V | View on Amazon |
| GATES | 39389 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| LITENS | 999844A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
4 Belt Tensioner parts are listed for the 2021 BMW M2, from ULTRA-POWER, CONTINENTAL, GATES and 1 other brand.
In the Economy grade, ULTRA-POWER supplies 1 part: the catalog's value-priced group. A representative part number is ULTRA-POWER 39389.
The Standard Replacement section lists 3 options from CONTINENTAL, GATES and LITENS — built to original-equipment specification. CONTINENTAL 49841 is listed in this group.
Listed part numbers: ULTRA-POWER 39389 and CONTINENTAL 49841, plus the other parts above.
Idler Pulley
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 11288673720 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VAICO | V202769 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Material Type: Plastic | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular | 50069 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SmoothIncludes Hardware | View on Amazon |
| LITENS Popular | 900680A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| ACDELCO | 36728 | 🇺🇸 US 🇨🇦 CA | Professional / Gold | View on Amazon |
| DAYCO | 89551 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| GATES | 36728 | 🇺🇸 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.
7 Idler Pulley parts for the 2021 BMW M2 come from 7 brands — ÜRO PARTS, VAICO, CONTINENTAL and 4 other brands. The "Popular" part is CONTINENTAL 50069.
The Economy section: 2 options from ÜRO PARTS and VAICO. ÜRO PARTS 11288673720 is listed in this group.
Standard Replacement: 5 parts, from CONTINENTAL, LITENS, ACDELCO and 2 other brands. A representative part number is CONTINENTAL 50069.
This group includes CONTINENTAL 50069, ÜRO PARTS 11288673720 and VAICO V202769 and the remaining parts above.
Tensioner Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 11288088632 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | For Alternator and A/C Belt | View on Amazon |
This table covers the pulleys on the tensioner arm. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt.
One part is listed for the 2021 BMW M2 — ÜRO PARTS 11288088632.
Buying Belt Drive Parts for a 2021 BMW M2
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- Confirm you have the 3.0L L6 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: Idler Pulley and Belt .
Frequently Asked Questions
How many belt drive parts fit the 2021 BMW M2?
Our catalog currently lists 18 belt drive parts for the 2021 BMW M2 across 4 subcategories and 9 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of belt drive problems on a 2021 BMW M2?
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 M2 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 M2?
Every part on this page is matched to the 3.0L L6 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 M2
Belt Drive Parts for Other BMW M2 Years
Switch vehicle or jump to a subcategory
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.