This page lists 34 belt drive parts for the 2017 Freightliner MT, across 4 part types, covering both the 6.0L V8 and the 6.7L L6 DIESEL Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
On the 2017 Freightliner MT, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. 33 parts of the 34 listed are Belt (14 parts), Belt Tensioner (14 parts) and Tensioner Pulley (5 parts). The other 1 part type covers the remaining 1 part.
The 2017 Freightliner MT was sold with both the 6.0L V8 and the 6.7L L6 DIESEL Turbocharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
8 brands supply belt drive parts for the 2017 Freightliner MT, led by GATES (9 parts), DAYCO (7 parts) and ACDELCO (5 parts), plus 5 more brands. Quality grades include Standard Replacement, Economy and Heavy Duty.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2017 Freightliner MT. 9 parts have it, including GATES K060984 (Belt) and SKP SK89397 (Belt Tensioner). Each part number opens a page with every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 6.0L V8 | K060984 | 🇺🇸 US 🇨🇦 CA | Micro-V | View on Amazon |
| ROADMAX Popular Fits: 6.0L V8 | 6K984AP | 🇺🇸 US 🇨🇦 CA | V-RibbedSerpentine | View on Amazon |
| DAYCO Fits: 6.0L V8 | 5060985DR | 🇺🇸 US 🇨🇦 CA | Drive Rite®Serpentine | View on Amazon |
| ROADMAX Fits: 6.7L L6 DIESEL Turbocharged | 8K830AP | 🇺🇸 US 🇨🇦 CA | V-RibbedSerpentine | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 6.7L L6 DIESEL Turbocharged | K080830HD | 🇺🇸 US 🇨🇦 CA | Fleet Runner Heavy Duty Micro-V | View on Amazon |
| ACDELCO Fits: 6.7L L6 DIESEL Turbocharged | K080830HD | 🇺🇸 US 🇨🇦 CA | Professional / GoldHeavy Duty | View on Amazon |
| CONTINENTAL Fits: 6.7L L6 DIESEL Turbocharged | 4080830X | 🇺🇸 US 🇨🇦 CA | Extreme Duty Multi V-BeltSerpentine | View on Amazon |
| GATES Fits: 6.0L V8 | K060984HD | 🇺🇸 US 🇨🇦 CA | Fleet Runner Heavy Duty Micro-V | View on Amazon |
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Fits: 6.7L L6 DIESEL Turbocharged | 5080830SC | 🇺🇸 US 🇨🇦 CA | Serpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 6.7L L6 DIESEL Turbocharged | K080830 | 🇺🇸 US 🇨🇦 CA | Micro-V | View on Amazon |
| ACDELCO Fits: 6.0L V8 | 6K984 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| ACDELCO Fits: 6.7L L6 DIESEL Turbocharged | 8K830 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| DAYCO Fits: 6.0L V8 | 5060985 | 🇺🇸 US 🇨🇦 CA | Serpentine | View on Amazon |
| DAYCO Fits: 6.7L L6 DIESEL Turbocharged | 5080830 | 🇺🇸 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.
14 Belt parts for the 2017 Freightliner MT come from 5 brands — GATES, DAYCO, ACDELCO and 2 other brands. The "Popular" part is GATES K060984.
The Economy section lists 4 options from ROADMAX, GATES and DAYCO — the catalog's value-priced group. GATES K060984 is listed in this group.
In the Heavy Duty grade, GATES, ACDELCO and CONTINENTAL supply 4 parts: rated for severe service. A representative part number is GATES K080830HD.
The High Performance section lists 1 option from DAYCO — engineered beyond original-equipment specification. DAYCO 5080830SC is listed in this group.
In the Standard Replacement grade, ACDELCO, DAYCO and GATES supply 5 parts: built to original-equipment specification. A representative part number is GATES K080830.
Belt Tensioner
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 6.0L V8 | SK89397 | 🇺🇸 US 🇨🇦 CA | MT45Plastic Pulley | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 419375 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 6.7L L6 DIESEL Turbocharged | SK89930 | 🇺🇸 US 🇨🇦 CA | Air Conditioning, Alternator, Fan and Water Pump | View on Amazon |
| SKP Fits: 6.7L L6 DIESEL Turbocharged | SK89490 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 6.7L L6 DIESEL Turbocharged | 90K38702HDC | 🇺🇸 US 🇨🇦 CA | Heavy DutyKit | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 6.0L V8 | 39083 | 🇺🇸 US 🇨🇦 CA | Professional / Gold | View on Amazon |
| DAYCO Popular Fits: 6.7L L6 DIESEL Turbocharged | 89930 | 🇺🇸 US 🇨🇦 CA | Air Conditioning, Alternator and Water Pump | View on Amazon |
| GATES Popular Fits: 6.7L L6 DIESEL Turbocharged | 38702 | 🇺🇸 US 🇨🇦 CA | Fleet Runner | View on Amazon |
| CONTINENTAL Fits: 6.0L V8 | 49436 | 🇺🇸 US 🇨🇦 CA | Grooved Pulley | View on Amazon |
| DAYCO Fits: 6.0L V8 | 89397 | 🇺🇸 US 🇨🇦 CA | Grooved Pulley | View on Amazon |
| GATES Fits: 6.0L V8 | 39083 | 🇺🇸 US 🇨🇦 CA | Flanged | View on Amazon |
| GATES Fits: 6.0L V8 | 39431 | 🇺🇸 US 🇨🇦 CA | MT45Steel Pulley | View on Amazon |
| LITENS Fits: 6.0L V8 | 999366A | 🇺🇸 US 🇨🇦 CA | MT45Plastic Pulley | View on Amazon |
| LITENS Fits: 6.7L L6 DIESEL Turbocharged | 910588A | 🇺🇸 US 🇨🇦 CA | Air Conditioning, Alternator, Fan and Water Pump | 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.
14 Belt Tensioner parts are listed for the 2017 Freightliner MT, from GATES, SKP, DAYCO and 4 other brands. SKP SK89397 carries the "Popular" badge.
Economy: 4 parts, from SKP and DORMAN. A representative part number is SKP SK89397.
In the Kit grade, GATES supplies 1 part: grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. A representative part number is GATES 90K38702HDC.
The Standard Replacement section: 9 options from GATES, DAYCO, LITENS and 2 other brands. ACDELCO 39083 is listed in this group.
Idler Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 6.0L V8 | SK89009 | 🇺🇸 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.
This group shows a single part: SKP SK89009.
Tensioner Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 6.0L V8 | 38009 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| ACDELCO Fits: 6.0L V8 | 38009 | 🇺🇸 US 🇨🇦 CA | Professional / GoldGrooved | View on Amazon |
| CONTINENTAL Fits: 6.0L V8 | 49003 | 🇺🇸 US 🇨🇦 CA | GroovedDoes Not Include Hardware | View on Amazon |
| DAYCO Fits: 6.0L V8 | 89009 | 🇺🇸 US 🇨🇦 CA | GroovedIdler Assembly | View on Amazon |
| LITENS Fits: 6.0L V8 | 900027A | 🇺🇸 US 🇨🇦 CA | Grooved | 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.
5 Tensioner Pulley parts are listed for the 2017 Freightliner MT, from GATES, ACDELCO, CONTINENTAL and 2 other brands. GATES 38009 carries the "Popular" badge.
Part numbers include GATES 38009 and CONTINENTAL 49003, among others listed above.
Buying Belt Drive Parts for a 2017 Freightliner MT
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 2017 Freightliner MT?
Our catalog currently lists 34 belt drive parts for the 2017 Freightliner MT across 4 subcategories and 8 brands, covering both the 6.0L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do belt drive parts differ between 2017 Freightliner MT 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 MT?
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 MT 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 MT?
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 MT
Belt Drive Parts for Other Freightliner MT 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.