2004 Mack CX Pulleys

Keep Your 2004 Mack CX in Top Shape with Quality Pulleys

Whether you’re repairing or upgrading your Pulley, using high-quality parts is key to keeping your 2004 Mack CX looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Belt Tensioner Pulleys and 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 Mack CX Pulley at Advance Auto Parts is around $72.39, with a range that starts at $54.99 and goes up to $107.99. With 5 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 46.27mm Width, Smooth, Tensioner Pulley: Direct Fit, Steel, 74mm Diameter, and DriveAlign Belt Drive Idler/Tensioner Pulley start at just $54.99 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 Mack CX in peak condition, inside and out.

Essential 2004 Mack CX Pulleys

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

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 46.27mm Width, Smooth

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.

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

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

DriveAlign Belt Drive Idler/Tensioner Pulley

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.

Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for durability and quality performance.
  • Built to last with a superior resistance to dirt, salt, chemicals and other under-hood 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
  • High-end bearings eliminate bearing noise
  • Mounting hardware included for some popular applications
  • Reliable operation under severe conditions
See More

Litens – Tensioner Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900121A)

Tensioner Pulley: Direct Fit, Steel, 74mm Diameter

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.
See More

Litens – Idler Pulley: Direct Fit, Steel, 112mm Diameter (Part No.900180A)

Idler Pulley: Direct Fit, Steel, 112mm Diameter

from

$58.99
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 Mack. 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 Mack Truck Applications
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
See More

Dayco – Idler Pulley, Dayco (Part No.89009)

Idler Pulley, Dayco

from

$24.99
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.

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
See More

Most Popular Belt Tensioner Pulleys for 2004 Mack CXes

Enhance your 2004 Mack CX with one of the 3 Belt Tensioner Pulleys we have in stock, starting at just $54.99.

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

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 46.27mm Width, Smooth

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.

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

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

DriveAlign Belt Drive Idler/Tensioner Pulley

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.

Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for durability and quality performance.
  • Built to last with a superior resistance to dirt, salt, chemicals and other under-hood 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
  • High-end bearings eliminate bearing noise
  • Mounting hardware included for some popular applications
  • Reliable operation under severe conditions
See More

Litens – Tensioner Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900121A)

Tensioner Pulley: Direct Fit, Steel, 74mm Diameter

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.
See More

Best-Selling 2004 Mack CX Idler Pulleys

Upgrade your CX with one of our 2 best-selling Idler Pulleys.

Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36167)

DriveAlign Belt Drive Idler/Tensioner Pulley

from

$107.99
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.
  • Original equipment quality suitable for virtually all domestic and import vehicles in today’s fleet
  • 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 popular applications
  • Reliable operation under severe conditions
See More

Litens – Idler Pulley: Direct Fit, Steel, 112mm Diameter (Part No.900180A)

Idler Pulley: Direct Fit, Steel, 112mm Diameter

from

$58.99
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 Mack. 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 Mack Truck Applications
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
See More

FAQs for 2004 Mack CX Pulleys

What are the best-selling Pulleys for 2004 Mack CXes?

Out of 5 Pulleys that fit 2004 Mack CXes, the following parts are the top sellers:

What’s the price range for 2004 Mack CX Pulleys?

The prices of Pulleys for the 2004 Mack CX range from $54.99 up to $107.99 for the most premium parts.

What is the average price of a Pulley for a 2004 Mack CX?

The average price for Pulleys for the 2004 Mack CX is $72.39. 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 Mack CX model years?

Yes, we carry Pulleys for 6 model years of Mack CXes between 1998 and 2005. The following model years are the most popular for Pulley purchases: 2005, 2003, 2002, 2001, 2000, 1999, and 1998.

What are the cheapest Pulleys for my 2004 Mack CX?

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

Yes. We stock Pulleys for 7 other popular 2004 Mack models. Some of the most popular are 2004 CXN Pulleys, 2004 LE Pulleys, 2004 CHN Pulleys, 2004 CV Pulleys, and 2004 CL Pulleys.

What types of Pulleys do you sell for my 2004 Mack CX?

As of 11/2/25, these are some of the most in-demand types of Pulleys for a 2004 Mack CX:

Can I get help with 2004 Mack CX Pulley orders?

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

What is your return policy for Mack CX Pulleys?

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