24/7 Customer service
USD
Add your vehicle
Address
Login
Cart
Item
$0.00
A-Premium Labor Day Deals Up to 15% OFFA-Premium Labor Day Deals Up to 15% OFF
Add your vehicle to ensure fitment/Choose a yearRequired Fields
Select a different vehicle
Make/Model
VIN
Save

Freightliner 122sd Belt Tensioner

8 items

Find an A-Premium belt tensioner for squealing, slipping or uneven belt wear. Browse drive belt tensioners and pulley assemblies for your vehicle.

  • All filters
  • Sort By
  • Year
  • Price
  • Brand
  • Material
  • Warranty
Belt Tensioner with Pulley for Freightliner Cascadia Volvo International HarvesterBelt Tensioner with Pulley for Freightliner Cascadia Volvo International Harvester
A-Premium®Part # APBT0341
Belt Tensioner with Pulley for Freightliner Cascadia Volvo International Harvester
4.6172 Reviews
$70.99
Low stock: Only 3 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2012 - 2019 Freightliner Cascadia, 2015 - 2017 Freightliner Cascadia, 2020 - 2020 Freightliner Cascadia, 2007 - 2007 International Harvester 5500i, 2011 - 2011 International Harvester 5600i, 2016 - 2016 International Harvester 5900i, 2010 - 2010 International Harvester 9900i, 2018 - 2018 International Harvester 9900i, 2020 - 2022 International Harvester HX520, 2020 - 2022 International Harvester HX620, 2011 - 2011 International Harvester LoneStar, 2020 - 2021 International Harvester LoneStar, 2020 - 2020 International Harvester LT, 2022 - 2022 International Harvester LT, 2018 - 2022 International Harvester LT625, 2019 - 2019 International Harvester ProStar, 2019 - 2019 International Harvester ProStar, 2013 - 2017 International Harvester ProStar, 2015 - 2016 International Harvester ProStar, 2010 - 2016 Kenworth C500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Quantity1
MaterialSteel
ConditionNew
item #10050CVS
Show less
Accessory Belt Tensioner for Freightliner 114SD Cascadia Sterling Truck A9500
A-Premium®Part # APBT0528
Accessory Belt Tensioner for Freightliner 114SD Cascadia Sterling Truck A9500
4.6172 Reviews
$133.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2014 - 2021 Freightliner Cascadia, 2022 - 2022 Freightliner 122SD, 2010 - 2010 Freightliner Century Class, 2010 - 2015 Freightliner Coronado, 2013 - 2022 Freightliner Sport Chassis, 2010 - 2018 Western Star 4900FA, 2014 - 2014 Freightliner 122SD, 2008 - 2009 Freightliner Century Class, 2011 - 2011 Freightliner Sport Chassis, 2014 - 2019 Freightliner 122SD, 2014 - 2020 Freightliner 122SD, 2012 - 2012 Freightliner Cascadia, 2011 - 2016 Freightliner Coronado, 2011 - 2021 Freightliner Cascadia, 2011 - 2011 Freightliner Cascadia, 2013 - 2013 Freightliner Cascadia, 2012 - 2021 Western Star 4800SB, 2023 - 2023 Freightliner Cascadia, 2011 - 2022 Freightliner M2 112, 2011 - 2012 Western Star 6900XD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Quantity1
MaterialSteel, Steel, Steel
ConditionNew
item #1015DW1G
Show less
Drive Belt Tensioner Assembly for Freightliner 114SD 122SD M2 112 Cascadia
AisinPart # BTAZ-00268
Drive Belt Tensioner Assembly for Freightliner 114SD 122SD M2 112 Cascadia
4.6172 Reviews
$201.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2022 - 2022 Freightliner 122SD, 2011 - 2016 Freightliner Coronado, 2014 - 2020 Freightliner 122SD, 2011 - 2021 Freightliner Cascadia, 2013 - 2022 Freightliner Sport Chassis, 2023 - 2023 Freightliner 122SD, 2011 - 2018 Western Star 4900SA, 2016 - 2021 Western Star 5700XE, 2011 - 2011 Freightliner Sport Chassis, 2010 - 2018 Western Star 4900SA, 2013 - 2021 Western Star 4700SF, 2014 - 2019 Freightliner 122SD, 2010 - 2016 Freightliner Coronado, 2009 - 2021 Freightliner Cascadia, 2009 - 2009 Sterling Truck L9500, 2011 - 2011 Western Star 6900XD, 2012 - 2021 Western Star 4800SB, 2008 - 2010 Freightliner Century Class, 2010 - 2021 Western Star 4900EX, 2011 - 2021 Western Star 4900EX
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Part interchange
366545510790
ConditionNew
item #1018ZW2E
Show less
Drive Belt Tensioner Assembly for Mack CL CXU Volvo VT VNL VNM 2003-2022
AisinPart # BTAZ-00267
Drive Belt Tensioner Assembly for Mack CL CXU Volvo VT VNL VNM 2003-2022
4.6172 Reviews
$67.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2009 - 2009 International Harvester 9900i, 2018 - 2022 International Harvester LT625, 2007 - 2007 Volvo VNM, 2011 - 2015 Kenworth T700, 2004 - 2008 Kenworth T2000, 2004 - 2007 Peterbilt 378, 2005 - 2007 International Harvester 5600i, 2015 - 2016 International Harvester 5900i, 2014 - 2017 Autocar LLC. Xpeditor, 2009 - 2009 International Harvester 5600i, 2011 - 2016 Freightliner Coronado, 2011 - 2015 Peterbilt 587, 2008 - 2016 International Harvester ProStar, 2003 - 2007 Peterbilt 379, 2019 - 2021 International Harvester LoneStar, 2004 - 2007 Mack CL, 2019 - 2020 Peterbilt 520, 2011 - 2016 Peterbilt 365, 2003 - 2011 Kenworth W900, 2014 - 2014 Volvo VNL
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Part interchange
366545529266
ConditionNew
item #1018ZZQZ
Show less
Accessory Belt Idler Pulley for Freightliner Sterling Truck Western Star Diesel
A-Premium®Part # APBT0644
Accessory Belt Idler Pulley for Freightliner Sterling Truck Western Star Diesel
4.6172 Reviews
$31.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2022 - 2022 Freightliner 122SD, 2024 - 2025 Freightliner Cascadia, 2025 - 2025 Freightliner M2 112, 2013 - 2022 Freightliner Sport Chassis, 2012 - 2018 Western Star 4900FA, 2009 - 2019 Freightliner Cascadia, 2011 - 2011 Freightliner Sport Chassis, 2014 - 2015 Western Star 4800SF, 2014 - 2019 Freightliner 122SD, 2008 - 2020 Freightliner Cascadia, 2014 - 2020 Freightliner 122SD, 2011 - 2016 Freightliner Coronado, 2011 - 2021 Freightliner Cascadia, 2012 - 2021 Western Star 4800SB, 2008 - 2010 Freightliner Century Class, 2011 - 2011 Western Star 4900FA, 2011 - 2022 Freightliner M2 112, 2020 - 2021 Freightliner Cascadia, 2025 - 2025 Freightliner Cascadia, 2011 - 2012 Western Star 6900XD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Quantity1
MaterialSteel
ConditionNew
item #10183TX7
Show less
Belt Idler Pulley for Kenworth T2000 T660 T680 T700 Mack CL CXU Peterbilt 320
A-Premium®Part # APBT0615
Belt Idler Pulley for Kenworth T2000 T660 T680 T700 Mack CL CXU Peterbilt 320
4.6172 Reviews
$34.99
Low stock: Only 5 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2014 - 2017 Mack CXU, 2021 - 2021 International Harvester HX620, 2022 - 2022 Freightliner 114SD, 2006 - 2007 Peterbilt 357, 2013 - 2015 Kenworth T700, 2008 - 2012 International Harvester ProStar, 2016 - 2016 Peterbilt 365, 2016 - 2018 Kenworth T880, 2005 - 2007 International Harvester 5600i, 2014 - 2017 International Harvester ProStar, 2017 - 2019 Kenworth T680, 2004 - 2007 Kenworth T600A, 2013 - 2014 Peterbilt 367, 2018 - 2018 International Harvester LT625, 2016 - 2016 Autocar LLC. Xpeditor, 2012 - 2012 Peterbilt 365, 2004 - 2009 International Harvester 5500i, 2021 - 2021 Freightliner 122SD, 2014 - 2018 International Harvester 9900i, 2018 - 2018 Freightliner Cascadia
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Quantity1
Part interchange
3682229, 3689465, 36223
ConditionNew
item #1015DUXH
Show less
AISIN Drive Belt Idler Pulley for Mack CL CXU Volvo VT VNL VNM Kenworth T660
AisinPart # BTAZ-00270
AISIN Drive Belt Idler Pulley for Mack CL CXU Volvo VT VNL VNM Kenworth T660
4.6172 Reviews
$51.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2005 - 2007 International Harvester 9900i, 2009 - 2009 International Harvester 9900ix, 2007 - 2007 Volvo VNM, 2013 - 2015 Kenworth T700, 2004 - 2008 Kenworth T2000, 2006 - 2010 Volvo VT, 2004 - 2011 Peterbilt 387, 2004 - 2007 Peterbilt 378, 2005 - 2007 International Harvester 5600i, 2009 - 2009 International Harvester 5600i, 2011 - 2016 Freightliner Coronado, 2004 - 2008 International Harvester 5900i, 2003 - 2007 Peterbilt 379, 2003 - 2003 International Harvester 9900i, 2022 - 2023 Freightliner 114SD, 2004 - 2007 Mack CL, 2019 - 2020 Peterbilt 520, 2011 - 2016 Peterbilt 365, 2013 - 2023 Kenworth T680, 2011 - 2017 Peterbilt 587
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Part interchange
36223, 3682229, 3689465
ConditionNew
item #1018PDE4
Show less
Belt Tensioner with Pulley for Freightliner Coronado 2011-2016 Western Star Mack
A-Premium®Part # APBT0291
Belt Tensioner with Pulley for Freightliner Coronado 2011-2016 Western Star Mack
4.6172 Reviews
$57.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2014 - 2017 Autocar LLC. Xpeditor, 2019 - 2019 Autocar LLC. Xpeditor, 2016 - 2017 Freightliner 114SD, 2014 - 2019 Freightliner 122SD, 2009 - 2019 Freightliner Cascadia, 2011 - 2016 Freightliner Coronado, 2004 - 2009 International Harvester 5500i, 2005 - 2007 International Harvester 5600i, 2009 - 2009 International Harvester 5600i, 2011 - 2011 International Harvester 5600i, 2015 - 2016 International Harvester 5900i, 2003 - 2008 International Harvester 9200i SBA, 2003 - 2003 International Harvester 9400i SBA, 2003 - 2006 International Harvester 9900i, 2004 - 2007 International Harvester 9900ix, 2018 - 2022 International Harvester HX520, 2017 - 2022 International Harvester HX620, 2009 - 2011 International Harvester LoneStar, 2018 - 2022 International Harvester LT625, 2008 - 2016 International Harvester ProStar
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Freightliner 122SD
Item LocatedUnited States
Quantity1
ConditionNew
item #10050PL2
Note
It comes with pulley.
Show less

What does a belt tensioner do?

Seat belt tensioners represent an integral facet of contemporary automotive safety systems. These sophisticated devices are meticulously engineered to augment passenger protection by mitigating the potentially injurious effects of a vehicular collision or abrupt deceleration event. 

Belt tensioner noise

Belt tensioner noise is typically an indication of a problem within the engine's accessory drive system, and it should not be ignored.

Squealing or Whining Noise: A common sign of a failing or worn-out belt tensioner is a high-pitched squealing or whining noise. This noise is often most noticeable when you start the engine or when you engage accessories like the air conditioner or power steering.

Rattling or Grinding Noise: A failing tensioner may also produce a rattling or grinding noise, especially at higher engine speeds or when the drive belt is under load.

Intermittent Noise: The noise produced by a failing belt tensioner can be intermittent, depending on factors like engine temperature and load.

Belt tensioner replacement

Replacing a belt tensioner is a relatively straightforward mechanical procedure, but it does require some mechanical knowledge and the right tools. Steps to follow when you are planning to replace your seal belt tensioner.

  1. Safety first: Ensure the engine is off, and the vehicle is secure. Disconnect the battery if necessary.
  2. Locate tensioner: Find the belt tensioner, usually a pulley on a bracket with a spring-loaded arm.
  3. Release belt tension: Use the right tool to rotate the tensioner arm, relieving tension on the drive belt.
  4. Remove belt: Carefully slide the belt off the pulleys. Note routing for reference.
  5. Remove old tensioner: Unbolt the old tensioner, keeping track of the hardware.
  6. Install new tensioner: Place the new tensioner in the same spot and secure it with bolts. Align it correctly.
  7. Reinstall belt: Put the belt back on the pulleys, ensuring proper alignment.
  8. Adjust tension: Use the tool to apply tension and follow the manufacturer's specs.
  9. Double-check: Confirm belt alignment and tension on all pulleys.
  10. Test: Start the engine, listen for issues, and check belt movement.
  11. Reconnect battery: If disconnected earlier, reconnect the vehicle's battery.
  12. Dispose of old parts: Properly dispose of the old tensioner and parts.

Related Blogs

Should You Replace the Tensioner When Replacing a Cracked Serpentine Belt?

Don't automatically replace the tensioner with a cracked serpentine belt. Check for weak spring force, misalignment, or noise. Replace both if the tensioner is worn; otherwise, swapping just the belt is often sufficient.

Aug 28, 2026