The 2021 Freightliner Sprinter 2500 has 22 belt drive parts with verified fitment on this page — 3 part types and 5 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.1L L4 DIESEL Turbocharged and 3.0L V6 DIESEL Turbocharged). Each part includes a manufacturer part number and application notes.
On the 2021 Freightliner Sprinter 2500, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. All 22 listed parts are Belt (15 parts), Belt Tensioner (5 parts) and Idler Pulley (2 parts).
The 2021 Freightliner Sprinter 2500 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
5 brands supply belt drive parts for the 2021 Freightliner Sprinter 2500, led by CONTINENTAL (9 parts), DAYCO (8 parts) and FVP (3 parts), plus 2 more brands. Quality grades include Economy and Standard Replacement.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Freightliner Sprinter 2500. 4 parts have it, including FVP 870K6 (Belt) and DAYCO 89651 (Belt Tensioner). Each part number opens a page with every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: 2.1L L4 DIESEL Turbocharged | 870K6 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| CONTINENTAL Fits: 2.0L L4 Turbocharged | 670K6MK | 🇺🇸 US 🇨🇦 CA | Mileage MakerSerpentine | View on Amazon |
| CONTINENTAL Fits: 2.1L L4 DIESEL Turbocharged | 872K6MK | 🇺🇸 US 🇨🇦 CA | Mileage MakerSerpentine | View on Amazon |
| CONTINENTAL Fits: 3.0L V6 DIESEL Turbocharged | 801K7MK | 🇺🇸 US 🇨🇦 CA | Mileage MakerSerpentine | View on Amazon |
| DAYCO Fits: 2.0L L4 Turbocharged | 5060670DR | 🇺🇸 US 🇨🇦 CA | Drive Rite®Serpentine | View on Amazon |
| DAYCO Fits: 2.1L L4 DIESEL Turbocharged | 5060870DR | 🇺🇸 US 🇨🇦 CA | Drive Rite®Serpentine | View on Amazon |
| DAYCO Fits: 3.0L V6 DIESEL Turbocharged | 5070801DR | 🇺🇸 US 🇨🇦 CA | Drive Rite®Serpentine | View on Amazon |
| FVP Fits: 2.0L L4 Turbocharged | 670K6 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| FVP Fits: 3.0L V6 DIESEL Turbocharged | 801K7 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular Fits: 2.0L L4 Turbocharged | 4060670 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| DAYCO Popular Fits: 3.0L V6 DIESEL Turbocharged | 5070801 | 🇺🇸 US 🇨🇦 CA | Serpentine | View on Amazon |
| CONTINENTAL Fits: 2.1L L4 DIESEL Turbocharged | 4060870 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| CONTINENTAL Fits: 3.0L V6 DIESEL Turbocharged | 4070802 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| DAYCO Fits: 2.0L L4 Turbocharged | 5060670 | 🇺🇸 US 🇨🇦 CA | Serpentine | View on Amazon |
| DAYCO Fits: 2.1L L4 DIESEL Turbocharged | 5060870 | 🇺🇸 US 🇨🇦 CA | 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.
15 Belt parts for the 2021 Freightliner Sprinter 2500 come from 3 brands — CONTINENTAL, DAYCO and FVP. The "Popular" part is FVP 870K6.
The Economy section lists 9 options from FVP, CONTINENTAL and DAYCO — the catalog's value-priced group. FVP 870K6 is listed in this group.
In the Standard Replacement grade, CONTINENTAL and DAYCO supply 6 parts: built to original-equipment specification. A representative part number is CONTINENTAL 4060670.
Belt Tensioner
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 3.0L V6 DIESEL Turbocharged | SKAPV2554 | 🇺🇸 US 🇨🇦 CA | with Rear Air Conditioning | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: 3.0L V6 DIESEL Turbocharged | 89651 | 🇺🇸 US 🇨🇦 CA | Pulley 1 Diameter: 65 mm | View on Amazon |
| CONTINENTAL Fits: 3.0L V6 DIESEL Turbocharged | 49459 | 🇺🇸 US 🇨🇦 CA | Multi-V | View on Amazon |
| CONTINENTAL Fits: 3.0L V6 DIESEL Turbocharged | 49431 | 🇺🇸 US 🇨🇦 CA | Multi-V or Smooth Pulley | View on Amazon |
| DAYCO Fits: 3.0L V6 DIESEL Turbocharged | 89463 | 🇺🇸 US 🇨🇦 CA | Automatic TensionerHeavy Duty | 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.
5 Belt Tensioner parts are listed for the 2021 Freightliner Sprinter 2500, from DAYCO, CONTINENTAL and SKP. DAYCO 89651 carries the "Popular" badge.
Economy: 1 part, from SKP. A representative part number is SKP SKAPV2554.
The Standard Replacement section: 4 options from DAYCO and CONTINENTAL. DAYCO 89651 is listed in this group.
Part numbers include DAYCO 89651, SKP SKAPV2554 and CONTINENTAL 49459, among others listed above.
Idler Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Fits: 3.0L V6 DIESEL Turbocharged | 50110 | 🇺🇸 US 🇨🇦 CA | Multi-VGrooved | View on Amazon |
| LITENS Fits: 3.0L V6 DIESEL Turbocharged | 951948A | 🇺🇸 US 🇨🇦 CA | Grooved | 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.
2 Idler Pulley parts for the 2021 Freightliner Sprinter 2500 come from 2 brands — CONTINENTAL and LITENS.
This group includes CONTINENTAL 50110 and LITENS 951948A.
Buying Belt Drive Parts for a 2021 Freightliner Sprinter 2500
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 Belt Tensioner .
Frequently Asked Questions
How many belt drive parts fit the 2021 Freightliner Sprinter 2500?
Our catalog currently lists 22 belt drive parts for the 2021 Freightliner Sprinter 2500 across 3 subcategories and 5 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.1L L4 DIESEL Turbocharged and 3.0L V6 DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do belt drive parts differ between 2021 Freightliner Sprinter 2500 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 Freightliner Sprinter 2500?
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 Freightliner Sprinter 2500 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 Freightliner Sprinter 2500?
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 Freightliner Sprinter 2500
Belt Drive Parts for Other Freightliner Sprinter 2500 Years
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