This page lists 17 belt drive parts for the 2017 Freightliner B2, across 3 part types, covering all 3 engine options (6.0L V8, 6.7L L6 DIESEL Turbocharged and 6.7L L6 Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.
On the 2017 Freightliner B2, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. All 17 listed parts are Belt Tensioner (7 parts), Belt (6 parts) and Idler Pulley (4 parts).
The 2017 Freightliner B2 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2017 Freightliner B2 belt drive parts are DAYCO (5 parts), GATES (4 parts) and ACDELCO (3 parts), plus 3 more brands. Quality grades include Economy, Standard Replacement and Heavy Duty.
4 parts on this 2017 Freightliner B2 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GATES K080806 (Belt) and DAYCO 89930 (Belt Tensioner). Click any part number to see every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 6.7L L6 DIESEL Turbocharged | K080806 | 🇺🇸 US 🇨🇦 CA | Micro-V | View on Amazon |
| DAYCO Fits: 6.7L L6 DIESEL Turbocharged, 6.7L L6 Turbocharged | 5080805DR | 🇺🇸 US 🇨🇦 CA | Drive Rite®Serpentine | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 6.7L L6 DIESEL Turbocharged | K080806HD | 🇺🇸 US 🇨🇦 CA | Fleet Runner Heavy Duty Micro-V | View on Amazon |
| ACDELCO Fits: 6.7L L6 DIESEL Turbocharged | K080806HD | 🇺🇸 US 🇨🇦 CA | Professional / GoldHeavy Duty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 6.7L L6 DIESEL Turbocharged | 8K806 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| DAYCO Fits: 6.7L L6 DIESEL Turbocharged, 6.7L L6 Turbocharged | 5080805 | 🇺🇸 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.
6 Belt parts are listed for the 2017 Freightliner B2, from GATES, DAYCO and ACDELCO. GATES K080806 carries the "Popular" badge.
In the Economy grade, GATES and DAYCO supply 2 parts: the catalog's value-priced group. A representative part number is GATES K080806.
The Heavy Duty section lists 2 options from GATES and ACDELCO — rated for severe service. GATES K080806HD is listed in this group.
The Standard Replacement section lists 2 options from ACDELCO and DAYCO — built to original-equipment specification. ACDELCO 8K806 is listed in this group.
Listed part numbers: GATES K080806, DAYCO 5080805DR and GATES K080806HD, plus the other parts above.
Belt Tensioner
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 419375 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 6.7L L6 DIESEL Turbocharged | SK89930 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 6.7L L6 DIESEL Turbocharged | SK89490 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: 6.7L L6 DIESEL Turbocharged | 89930 | 🇺🇸 US 🇨🇦 CA | Accessory Drive | View on Amazon |
| GATES Popular Fits: 6.7L L6 DIESEL Turbocharged | 38702 | 🇺🇸 US 🇨🇦 CA | Fleet Runner | View on Amazon |
| LITENS Fits: 6.7L L6 DIESEL Turbocharged | 910588A | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Fits: 6.7L L6 Turbocharged | 89930 | 🇺🇸 US | Accessory Drive | 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.
7 Belt Tensioner parts for the 2017 Freightliner B2 come from 5 brands — SKP, DAYCO, DORMAN and 2 other brands. The "Popular" part is DAYCO 89930.
The Economy section: 3 options from SKP and DORMAN. DORMAN 419375 is listed in this group.
Standard Replacement: 3 parts, from DAYCO, GATES and LITENS. A representative part number is DAYCO 89930.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include DAYCO 89930, DORMAN 419375 and SKP SK89930, among others listed above.
Idler Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 6.7L L6 DIESEL Turbocharged | 36093 | 🇺🇸 US 🇨🇦 CA | Professional / GoldGrooved | View on Amazon |
| DAYCO Fits: 6.7L L6 DIESEL Turbocharged | 89103 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| GATES Fits: 6.7L L6 DIESEL Turbocharged | 36093 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| LITENS Fits: 6.7L L6 DIESEL Turbocharged | 900122A | 🇺🇸 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.
4 Idler Pulley parts are listed for the 2017 Freightliner B2, from ACDELCO, DAYCO, GATES and 1 other brand.
Listed part numbers: ACDELCO 36093 and DAYCO 89103, plus the other parts above.
Buying Belt Drive Parts for a 2017 Freightliner B2
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 Tensioner and Belt .
Frequently Asked Questions
How many belt drive parts fit the 2017 Freightliner B2?
Our catalog currently lists 17 belt drive parts for the 2017 Freightliner B2 across 3 subcategories and 6 brands, covering all 3 engine options (6.0L V8, 6.7L L6 DIESEL Turbocharged and 6.7L L6 Turbocharged). Each part is matched to the engine(s) it fits.
Do belt drive parts differ between 2017 Freightliner B2 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 2017 Freightliner B2?
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 2017 Freightliner B2 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 2017 Freightliner B2?
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 2017 Freightliner B2
Belt Drive Parts for Other Freightliner B2 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.