Western Star 5900 Idler Pulleys

Your Western Star 5900 will be happy to know that the search for the right Idler Pulleys you’ve been looking for is over! Advance Auto Parts has 1 different Idler Pulleys for your vehicle, ready for shipping or in-store pick up. The best part is, our Western Star 5900 Idler Pulleys start from as little as $44.99.

When it comes to your Western Star 5900, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Idler Pulleys brands so you can shop with complete confidence. We’re sure you will get the right product to keep that 5900 running for a long time.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Idler Pulleys for your 5900, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

Compare 21 Western Star Idler Pulleys

Dayco – Idler Pulley, Dayco (Part No.89171)

Idler Pulley, Dayco

from

$56.99
Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong plastic pulleys with specially formulated glass-filled polymers that resist wear & tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.

Product Features:
  • Designed for the majority of automotive vehicle applications on the road today.
  • High-quality materials help resist wear and improve belt life
  • Features premium lubricated bearings to extend service life
  • Meets or exceeds OE quality
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Litens – Idler Pulley: Direct Fit, Steel, 78mm Diameter (Part No.900466A)

Idler Pulley: Direct Fit, Steel, 78mm Diameter

from

$62.99
This pulley is supplied by Litens Automotive – inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part meets all performance and durability requirements. Fits Heavy Duty truck applications including the Mack LE Series. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by one of the world’s largest Original Equipment suppliers of accessory drive tensioners and pulleys.
  • Heavy Duty Steel Pulley
  • Precision steel stamping with close tolerance ball bearing pocket.
  • Electro-deposited coating (e-coat) for superior corrosion resistance.
  • Running surface designed and engineered for proper belt tracking.
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Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 39.25mm Width, Smooth (Part No.89101)

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 39.25mm Width, Smooth

from

$44.99
Designed to replace idler and tensioner pulleys for serpentine drives in heavy-duty diesel engine applications, Dayco HD idler/tensioner pulleys are machined from high-strength steel or powdered metal material to provide excellent wear resistance under harsh environments. Dual pressed-in bearings provide long bearing life and protection against the shock loads experienced by today’s diesel trucks.

Product Features:
  • Engineered for the demanding drive systems of today’s class 4-8 heavy-duty commercial trucks
  • Premium OE technology to ensure peak performance under extreme conditions
  • Utilizes 3D dimensional computer aided design (CAD) and finite element analysis (FEA) for optimal design and maximum structural integrity
  • Meets or exceeds OE quality
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Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 32.8mm Width, Smooth (Part No.89105)

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 32.8mm Width, Smooth

from

$45.99
Designed to replace idler and tensioner pulleys for serpentine drives in heavy-duty diesel engine applications, Dayco HD idler/tensioner pulleys are machined from high-strength steel or powdered metal material to provide excellent wear resistance under harsh environments. Dual pressed-in bearings provide long bearing life and protection against the shock loads experienced by today’s diesel trucks.

Product Features:
  • Engineered for the demanding drive systems of today’s class 4-8 heavy-duty commercial trucks
  • Premium OE technology to ensure peak performance under extreme conditions
  • Utilizes 3D dimensional computer aided design (CAD) and finite element analysis (FEA) for optimal design and maximum structural integrity
  • Meets or exceeds OE quality
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Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 86mm Diameter (Part No.900117A)

Idler/Tensioner Pulley: Direct Fit, Steel, 86mm Diameter

from

$68.99
This pulley is designed and engineered by Litens Automotive the inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part is made using the O.E. specified design and meets all performance and durability requirements. Heavy duty steel construction for long life and trouble-free performance. Designed for HD truck applications. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36308)

DriveAlign Belt Drive Idler/Tensioner Pulley

from

$236.99
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.

Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for high durability and quality performance
  • Built to last thanks to superior resistance to dirt, salt, chemicals, and other contaminants that can be found under the hood
  • OE quality that fits virtually any domestic or import vehicle on the market
  • Bearings meet or exceed OE standards with application-specific speed and load requirements to withstand high temperatures under the hood
  • High-quality bearings eliminate noise
  • Mounting hardware included for some common applications
  • Reliable operation in harsh conditions
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Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36302)

DriveAlign Belt Drive Idler/Tensioner Pulley

from

$228.99
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.

Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for durability and quality performance.
  • Built to last with superior resistance to dirt, salt, chemicals, and other engine compartment contaminants.
  • OE-quality fit for virtually every domestic or import vehicle on the road today
  • Bearings meet or exceed OE standards with application-specific speed and load requirements to withstand high temperatures under the hood
  • Premium bearings eliminate bearing noise
  • Mounting hardware included for some popular applications
  • Reliable operation in severe conditions
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Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 82.6mm Diameter, w/ Hardware (Part No.900502A)

Idler/Tensioner Pulley: Direct Fit, Steel, 82.6mm Diameter, w/ Hardware

from

$179.99
This pulley is supplied by Litens Automotive – inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part meets all performance and durability requirements. Fits Heavy Duty truck applications including International/Navistar. Includes new bolt and front and rear spacers. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Litens – Idler Pulley: Direct Fit, Steel, 75mm Diameter, w/ Hardware (Part No.900614A)

Idler Pulley: Direct Fit, Steel, 75mm Diameter, w/ Hardware

from

$171.99
This pulley is manufactured by one of the largest original equipment pulley suppliers to ensure proper fit and performance. This pulley is produced for 2006-2010 Freightliner Classic, Bus Class M2, Cascadia, Century Class, Columbia / Sterling A-Line, L-Line with 4000 Diesel It’s a serpentine belt routing application and conforms to original equipment material, tolerances, and specifications. This replacement part is made to the O.E. specified design and meets all performance and durability requirements. Heavy Duty Steel Pulley with close tolerance ball bearing pocket and Electro-deposited coating for superior corrosion resistance. This pulley comes with a dust shield, installation bolt and retainer. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36226)

DriveAlign Belt Drive Idler/Tensioner Pulley

from

$170.99
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.

Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for high durability and quality performance
  • Built to last with superior resistance to dirt, salt, chemicals, and other engine compartment contaminants.
  • OE-quality fit for virtually every domestic or import vehicle on the road today
  • The bearings meet or exceed OE standards with application-specific speed and load requirements, to withstand high temperatures under the hood.
  • Premium bearings eliminate bearing noise
  • Mounting hardware included for some common applications
  • Reliable operation in severe conditions
See More

Litens – Idler Pulley: Direct Fit, Steel, 86.5mm Diameter, w/ Hardware (Part No.900379A)

Idler Pulley: Direct Fit, Steel, 86.5mm Diameter, w/ Hardware

from

$136.99
This pulley is supplied by Litens Automotive – inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part meets all performance and durability requirements. Fits Heavy Duty truck applications including Freightliner Argosy and FLD. Comes complete with new bolt, washer, and spacer. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter, w/ Hardware (Part No.900454A)

Idler Pulley: Direct Fit, Steel, 74mm Diameter, w/ Hardware

from

$109.99
This pulley is supplied by Litens Automotive – inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part meets all performance and durability requirements. Fits Heavy Duty truck applications including Freightliner Columbia. Comes complete with new bolt, washer/dust cover, and spacer. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by the world’s largest Original Equipment supplier of accessory drive tensioners and pulleys.
  • Heavy Duty Steel Pulley for Freightliner Trucks
  • Pre-assembled pulleys save installation time and ensure that all components are assembled to original specifications for both installation and performance
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Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36341)

DriveAlign Belt Drive Idler/Tensioner Pulley

from

$105.99
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.

Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for durability and quality performance.
  • Built to last with superior resistance to dirt, salt, chemicals, and other engine compartment contaminants.
  • OE-quality fit for virtually every domestic or import vehicle on the road today
  • Bearings meet or exceed OE standards with application-specific speed and load requirements, to withstand high under hood temperatures
  • High-end bearings eliminate bearing noise
  • Mounting hardware included for some common applications
  • Reliable operation in severe conditions
See More

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter, w/ Hardware (Part No.900566A)

Idler Pulley: Direct Fit, Steel, 74mm Diameter, w/ Hardware

from

$90.99
This Litens pulley is manufactured by one of the largest original equipment pulley suppliers to ensure proper fit and performance. This pulley is produced for serpentine belt routing applications and is made of high strength steel for improved life and durability. This pulley conforms to original equipment material, tolerances, and specifications. This part fits Heavy Duty truck applications including 2000-2008 Kenworth with C13/C15. Comes pre-assembled with a new installation bolt and dust shield. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900301A)

Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter

from

$82.99
This Litens pulley is manufactured by one of the largest original equipment pulley suppliers to ensure proper fit and performance. This pulley is produced for serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. This replacement part is made in Canada to the O.E. specified design and meets all performance and durability requirements. This Heavy duty Steel pulley is 74.1mm O.D. Applications include HD Truck and Bus applications Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.38075)

DriveAlign Belt Drive Idler/Tensioner Pulley

from

$82.99
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.

Product Features:
  • Steel and thermoplastic construction designed with tight manufacturing tolerances for high durability and quality performance
  • Built to last thanks to superior resistance to dirt, salt, chemicals, and other contaminants that can be found under the hood
  • OE-quality fit for virtually every domestic or import vehicle on the road today
  • Bearings meet or exceed OE standards with application-specific speed and load requirements to withstand high temperatures under the hood
  • High-quality bearings eliminate noise
  • Mounting hardware included for some popular applications
  • Reliable operation in severe conditions
See More

Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36230)

DriveAlign Belt Drive Idler/Tensioner Pulley

from

$66.99
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.

Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for durability and quality performance.
  • Built to last with superior resistance to dirt, salt, chemicals, and other engine compartment contaminants.
  • Original equipment quality suitable for virtually all domestic and import vehicles in today’s fleet
  • Bearings meet or exceed OE standards with application-specific speed and load requirements, to withstand high under hood temperatures
  • Premium bearings eliminate bearing noise
  • Mounting hardware included for some popular applications
  • Reliable operation in severe conditions
See More

Litens – Idler Pulley: Direct Fit, Steel, 70mm Diameter (Part No.900657A)

Idler Pulley: Direct Fit, Steel, 70mm Diameter

from

$61.99
This Litens Idler Pulley is manufactured by one of the world’s largest original equipment pulley suppliers to ensure proper fit and performance. The part is made using the O.E. specified design and meets all performance and durability requirements. Heavy duty steel construction for long life and trouble-free performance. Designed for HD truck applications. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Designed and engineered by the Original Equipment supplier of this application.
  • Forged Heavy Duty Steel Pulley designed to displace bearing heat. Precision machined face for smooth running surface.
  • Lower Idler Pulley Position
  • Pulley Specs: 70mm (OD) x 10mm (ID -Inner Bore) x 18mm (ID – Inner Bore) x 34mm (Width).
  • Smooth/Backside – Steel Pulley.
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Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 75mm Diameter (Part No.900276A)

Idler/Tensioner Pulley: Direct Fit, Steel, 75mm Diameter

from

$60.99
This Litens pulley is manufactured by one of the largest original equipment pulley suppliers to ensure proper fit and performance. This pulley is produced for serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. This replacement part is made in Canada to the O.E. specified design and meets all performance and durability requirements. This Heavy duty Steel pulley is 74mm O.D. Applications include HD Truck and Bus applications Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 75mm Diameter (Part No.900041A)

Idler/Tensioner Pulley: Direct Fit, Steel, 75mm Diameter

from

$57.99
This pulley is supplied by Litens Automotive – inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part meets all performance and durability requirements. Fits Heavy Duty truck applications including Freightliner, Kenworth, Peterbilt, Sterling, and Western Star. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900120A)

Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter

from

$49.99
This pulley is designed and engineered by Litens Automotive the inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part is made using the O.E. specified design and meets all performance and durability requirements. Heavy duty steel construction for long life and trouble-free performance. Designed for HD truck applications. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by one of the largest original equipment part suppliers in the world to ensure proper form, fit, and performance.
  • Forged Heavy Duty Steel Pulley designed to displace bearing heat. Precision machined face for smooth running surface. Tandem 6303 Ball Bearings for extended life.
  • Installation instructions included.
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