The 2021 Freightliner Sprinter 3500 has 15 belt drive parts with verified fitment on this page — 3 part types and 5 brands, covering both the 2.1L L4 DIESEL Turbocharged and the 3.0L V6 DIESEL Turbocharged. Each part includes a manufacturer part number and application notes.
On the 2021 Freightliner Sprinter 3500, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. All 15 listed parts are Belt (10 parts), Belt Tensioner (3 parts) and Idler Pulley (2 parts).
The 2021 Freightliner Sprinter 3500 was sold with both the 2.1L L4 DIESEL Turbocharged and the 3.0L V6 DIESEL Turbocharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Freightliner Sprinter 3500 belt drive parts are DAYCO (6 parts), CONTINENTAL (5 parts) and FVP (2 parts), plus 2 more brands. Quality grades include Economy and Standard Replacement.
2 parts on this 2021 Freightliner Sprinter 3500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP 870K6 (Belt) and DAYCO 5070801 (Belt). Click any part number to see 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: 2.1L 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: 2.1L 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: 3.0L V6 DIESEL Turbocharged | 801K7 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| 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: 2.1L 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.
10 Belt parts are listed for the 2021 Freightliner Sprinter 3500, from CONTINENTAL, DAYCO and FVP. FVP 870K6 carries the "Popular" badge.
In the Economy grade, FVP, CONTINENTAL and DAYCO supply 6 parts: the catalog's value-priced group. A representative part number is FVP 870K6.
The Standard Replacement section lists 4 options from DAYCO and CONTINENTAL — built to original-equipment specification. DAYCO 5070801 is listed in this group.
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 Fits: 3.0L V6 DIESEL Turbocharged | 89651 | 🇺🇸 US 🇨🇦 CA | Pulley 1 Diameter: 65 mm | 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.
3 Belt Tensioner parts for the 2021 Freightliner Sprinter 3500 come from 2 brands — DAYCO and SKP.
The Economy section: 1 option from SKP. SKP SKAPV2554 is listed in this group.
Standard Replacement: 2 parts, from DAYCO. A representative part number is DAYCO 89651.
Part numbers include SKP SKAPV2554, DAYCO 89651 and DAYCO 89463.
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 are listed for the 2021 Freightliner Sprinter 3500, from CONTINENTAL and LITENS.
Listed part numbers: CONTINENTAL 50110 and LITENS 951948A.
Buying Belt Drive Parts for a 2021 Freightliner Sprinter 3500
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 3500?
Our catalog currently lists 15 belt drive parts for the 2021 Freightliner Sprinter 3500 across 3 subcategories and 5 brands, covering both the 2.1L L4 DIESEL Turbocharged and the 3.0L V6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do belt drive parts differ between 2021 Freightliner Sprinter 3500 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 3500?
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 3500 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 3500?
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 3500
Belt Drive Parts for Other Freightliner Sprinter 3500 Years
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