2004 Peterbilt 320 Pulleys

Keep Your 2004 Peterbilt 320 in Top Shape with Quality Pulleys

Whether you’re repairing or upgrading your Pulley, using high-quality parts is key to keeping your 2004 Peterbilt 320 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Idler Pulleys. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 2004 Peterbilt 320 Pulley at Advance Auto Parts is around $55.24, with a range that starts at $44.99 and goes up to $92.99. With 4 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 39.25mm Width, Smooth, Idler/Tensioner Pulley: Direct Fit, Steel, 86mm Diameter, and Idler/Tensioner Pulley: Direct Fit, Steel, 74mm Diameter start at just $44.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Pulley, don’t forget to check out other key components like Belt Tensioners and Serpentine and V Belts. At Advance Auto Parts, we’re here to help you keep your 2004 Peterbilt 320 in peak condition, inside and out.

Essential 2004 Peterbilt 320 Pulleys

Litens – Idler Pulley: Direct Fit, Steel, 76mm Diameter (Part No.900409A)

Idler Pulley: Direct Fit, Steel, 76mm Diameter

from

$52.99
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. 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 for Navistar/International Trucks
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
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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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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 (Part No.900274A)

Idler Pulley: Direct Fit, Steel, 75mm Diameter

from

$92.99
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 Kenworth, Freightliner, International, Peterbilt, and Sterling. Comes complete with new 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, 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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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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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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Most Popular Idler Pulleys for 2004 Peterbilt 320s

Enhance your 2004 Peterbilt 320 with one of the 4 Idler Pulleys we have in stock, starting at just $44.99.

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
See More

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.
See More

Litens – Idler Pulley: Direct Fit, Steel, 75mm Diameter (Part No.900274A)

Idler Pulley: Direct Fit, Steel, 75mm Diameter

from

$92.99
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 Kenworth, Freightliner, International, Peterbilt, and Sterling. Comes complete with new 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.
See More

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.
See More

FAQs for 2004 Peterbilt 320 Pulleys

What are the best-selling Pulleys for 2004 Peterbilt 320s?

Out of 4 Pulleys that fit 2004 Peterbilt 320s, the following parts are the top sellers:

What’s the price range for 2004 Peterbilt 320 Pulleys?

The prices of Pulleys for the 2004 Peterbilt 320 range from $44.99 up to $92.99 for the most premium parts.

What is the average price of a Pulley for a 2004 Peterbilt 320?

The average price for Pulleys for the 2004 Peterbilt 320 is $55.24. Keep in mind the variety of part types within our Pulley category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Pulleys for other Peterbilt 320 model years?

Yes, we carry Pulleys for 17 model years of Peterbilt 320s between 1999 and 2017. The following model years are the most popular for Pulley purchases: 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, and 2009.

What are the cheapest Pulleys for my 2004 Peterbilt 320?

Does Advance Auto Parts sell Pulleys for any other 2004 Peterbilt models?

Yes. We stock Pulleys for 6 other popular 2004 Peterbilt models. Some of the most popular are 2004 387 Pulleys, 2004 379 Pulleys, 2004 330 Pulleys, 2004 378 Pulleys, and 2004 357 Pulleys.

What types of Pulleys do you sell for my 2004 Peterbilt 320?

We currently have just 1 Pulley in stock for a 2004 Peterbilt 320, and as of 11/2/25, it is an Idler Pulley.

Can I get help with 2004 Peterbilt 320 Pulley orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Peterbilt Pulleys and more.

What is your return policy for Peterbilt 320 Pulleys?

Advance Auto Parts keeps returns simple. For new Peterbilt 320 Pulleys and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.