The 2021 BMW 750LI has 10 belt drive parts with verified fitment on this page — 1 part type and 5 brands, covering the 4.4L V8 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2021 BMW 750LI, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. Every listed part is a Belt.
The 2021 BMW 750LI came with a single engine, the 4.4L V8 Turbocharged, and every part is verified against it.
5 brands supply belt drive parts for the 2021 BMW 750LI, led by CONTINENTAL (4 parts), DAYCO (2 parts) and FVP (2 parts), plus 2 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 750LI. 2 parts have it, including CONTINENTAL 4040315 (Belt) and GATES K070649 (Belt). Each part number opens a page with every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL | 315K4MK | 🇨🇦 CA 🇲🇽 MX | Mileage MakerSerpentine | View on Amazon |
| DAYCO | 5070648DR | 🇨🇦 CA 🇲🇽 MX | Drive Rite®Serpentine | View on Amazon |
| FVP | 315K4 | 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| FVP | 650K7 | 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular | 4040315 | 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| GATES Popular | K070649 | 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
| ACDELCO | 7K649 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| CONTINENTAL | 4PK795 | 🇨🇦 CA 🇲🇽 MX | Metric LineSerpentine | View on Amazon |
| CONTINENTAL | 4070648 | 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| DAYCO | 5070648 | 🇨🇦 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.
10 Belt parts for the 2021 BMW 750LI come from 5 brands — CONTINENTAL, DAYCO, FVP and 2 other brands. The "Popular" part is CONTINENTAL 4040315.
The Economy section lists 4 options from FVP, CONTINENTAL and DAYCO — the catalog's value-priced group. CONTINENTAL 315K4MK is listed in this group.
In the Standard Replacement grade, CONTINENTAL, GATES, ACDELCO and 1 other brand supply 6 parts: built to original-equipment specification. A representative part number is CONTINENTAL 4040315.
Buying Belt Drive Parts for a 2021 BMW 750LI
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 .
Frequently Asked Questions
How many belt drive parts fit the 2021 BMW 750LI?
Our catalog currently lists 10 belt drive parts for the 2021 BMW 750LI across 1 subcategory and 5 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 750LI?
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 750LI 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 750LI?
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 750LI
Belt Drive Parts for Other BMW 750LI 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.