Western Star 4900EX Pulleys

Your One-Stop Shop For Trusted Western Star 4900EX Pulleys

If you’re in search of Western Star 4900EX Pulleys aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 22 Pulleys from top brands with prices ranging from $26.99 to $186.99.

Beyond great prices, we stock trusted brands manufacturing all types of Pulleys for your Western Star 4900EX.

And don’t forget to read customer reviews across all Pulleys categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Pulleys have to cost top dollar, and we prove it. Browse our top Western Star 4900EX Pulleys below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

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Essential Western Star 4900EX Pulleys

Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38076 (Part No.38076)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38076

from

$80.99
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.
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Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36092 (Part No.36092)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36092

from

$88.99
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.
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Litens – Litens Idler Pulley: Direct Fit, Steel, 78mm Diameter, 900466A (Part No.900466A)

Litens Idler Pulley: Direct Fit, Steel, 78mm Diameter, 900466A

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

Litens Idler Pulley: Direct Fit, Steel, 70mm Diameter, 900657A

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.
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Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36341 (Part No.36341)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36341

from

$113.99
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.
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Litens – Litens Idler Pulley: Direct Fit, Steel, 74mm Diameter, With Hardware, 900566A (Part No.900566A)

Litens Idler Pulley: Direct Fit, Steel, 74mm Diameter, With Hardware, 900566A

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

Litens Idler Pulley: Direct Fit, Steel, 86.5mm Diameter, with Hardware, 900379A

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.
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Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36226 (Part No.36226)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36226

from

$186.99
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.
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Litens – Litens Idler Pulley: Direct Fit, Steel, 83.5mm Diameter, 900376A (Part No.900376A)

Litens Idler Pulley: Direct Fit, Steel, 83.5mm Diameter, 900376A

from

$69.99
This pulley is manufactured 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 5000 and 9000 series vehicles. Comes complete with new 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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Dayco No Slack Gold Label – Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 46.27mm Width, Smooth, 89102 (Part No.89102)

Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 46.27mm Width, Smooth, 89102

from

$54.99
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.
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Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38075 (Part No.38075)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38075

from

$88.99
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.
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Litens – Litens Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, 900116A (Part No.900116A)

Litens Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, 900116A

from

$44.99
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. 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 – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36230 (Part No.36230)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 36230

from

$71.99
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.
See More

Litens – Litens Idler/Tensioner Pulley: Direct Fit, Steel, 75mm Diameter, 900041A (Part No.900041A)

Litens Idler/Tensioner Pulley: Direct Fit, Steel, 75mm Diameter, 900041A

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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Dayco No Slack Gold Label – Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 54.5mm Width, 12 Grooves, 89113 (Part No.89113)

Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 54.5mm Width, 12 Grooves, 89113

from

$66.99
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.
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Litens – Litens Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, with Hardware, 900506A (Part No.900506A)

Litens Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, with Hardware, 900506A

from

$65.99
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 Kenworth. Peterbilt, Freightliner, and Western Star. Comes pre-assembled with a new installation bolt and washer. 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 – Litens Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, 900121A (Part No.900121A)

Litens Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, 900121A

from

$58.99
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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Dayco – Idler Pulley, Dayco, 89016 (Part No.89016)

Idler Pulley, Dayco, 89016

from

$26.99
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 and tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.
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Litens – Litens Tensioner Pulley: Direct Fit, Steel, 75mm Diameter, 900042A (Part No.900042A)

Litens Tensioner Pulley: Direct Fit, Steel, 75mm Diameter, 900042A

from

$50.99
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, Volvo, Gillig, New Flyer, 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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Dayco No Slack Gold Label – Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 39.25mm Width, Smooth, 89101 (Part No.89101)

Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 39.25mm Width, Smooth, 89101

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.
See More

Litens – Litens Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, 900120A (Part No.900120A)

Litens Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, 900120A

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.
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Dayco No Slack Gold Label – Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 32.8mm Width, Smooth, 89105 (Part No.89105)

Dayco No Slack Gold Label Serpentine Idler/Tensioner Pulley Steel, 74mm Dia., 32.8mm Width, Smooth, 89105

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.
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Pulleys Brands You Can Trust For Your Western Star 4900EX

3 trusted brands of Pulleys line our shelves, ready to help keep your Western Star 4900EX running smooth. Below are some of the most popular brands and their top Pulleys offerings:

Popular Dayco Pulleys

Dayco products for the Western Star 4900EX span several categories. Some of the highest-rated Dayco Pulleys that will fit your Western Star 4900EX are:
Idler Pulley, Dayco, 89016
from $26.99
(75)
Idler Pulley, Dayco, 89016
Belt Tensioner Pulleys

Most Purchased Western Star 4900EX Pulleys from Dayco

When you buy the most frequently purchased Dayco brand Pulleys, you can be confident it will be the right part for your Western Star 4900EX. Here are the Dayco Pulleys Advanced Auto customers buy the most:
Idler Pulley, Dayco, 89016
from $26.99
(75)
Idler Pulley, Dayco, 89016
Belt Tensioner Pulleys

FAQs for Western Star 4900EX Pulleys

What are the most purchased Pulleys for the Western Star 4900EX?

Out of 22 Pulleys for the Western Star 4900EX, the most popular in our inventory are: