2008 GMC Sierra 3500 HD Idler Pulleys

Your 2008 GMC Sierra 3500 HD might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Idler Pulleys you desperately need.

We currently carry 14 Idler Pulleys to choose from for your 2008 GMC Sierra 3500 HD, and our inventory prices range from as little as $11.49 up to $98.45.

On top of low prices, Advance Auto Parts offers 5 different trusted brands of Idler Pulleys for the 2008 GMC Sierra 3500 HD. We only sell parts from trusted brands like Dayco so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 711 reviews on our Idler Pulleys for the 2008 GMC Sierra 3500 HD from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Idler Pulleys stock in-person!

Idler Pulleys for Your 2008 GMC Sierra 3500 HD

Dayco – Serpentine Idler/Tensioner Pulley; Steel, 76mm Dia., 30mm Width, Smooth (Part No.89165)

Serpentine Idler/Tensioner Pulley; Steel, 76mm Dia., 30mm Width, Smooth

from

$38.49
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
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Litens – O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 76 mm Diameter (Part No.900366A)

O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 76 mm Diameter

from

$65.99
This Litens supplied pulley is manufactured to original equipment specifications. This part is specifically designed for GM applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This pulley meets or exceeds all original equipment fit, form, and performance characteristics. 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:
  • Heavy duty steel pulley construction.
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
  • All hardware included for easy installation (Dust Shield), saving you time!
  • Installation instructions included
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Litens – O.E Quality Idler/Tensioner Pulley Direct Fit, Thermoplastic, 76 mm Diameter (Part No.900027A)

O.E Quality Idler/Tensioner Pulley Direct Fit, Thermoplastic, 76 mm Diameter

from

$28.99
This pulley is manufactured 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 in Canada using the O.E. specified design and meets all performance and durability requirements. Heavy duty thermoplastic 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._

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance
  • Heavy Duty Glass Reinforced Polymer Pulley for optimized dimensional control and running surface durability
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
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Dayco – Serpentine Idler/Tensioner Pulley; Polymer, 70mm Dia., 28.3mm Width, 6 Grooves (Part No.89015)

Serpentine Idler/Tensioner Pulley; Polymer, 70mm Dia., 28.3mm Width, 6 Grooves

from

$31.99
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

Dayco – Serpentine Idler/Tensioner Pulley; Steel, 76mm Dia., 30.1mm Width, 6 Grooves (Part No.89051)

Serpentine Idler/Tensioner Pulley; Steel, 76mm Dia., 30.1mm Width, 6 Grooves

from

$24.79
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 pl

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

Dorman – Idler Pulley (Pulley only) (Part No.419-602)

Idler Pulley (Pulley only)

from

$13.49
This accessory drive belt tensioner pulley is designed to match the fit and function of the original pulley on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this accessory drive belt tensioner pulley is designed to match the fit and function of the original pulley on specified applications
  • Restores functionality – reliable replacement for an original pulley that has failed due to vibration or corrosion
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Litens – O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 90 mm Diameter (Part No.900401A)

O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 90 mm Diameter

from

$66.99
This Litens pulley is supplied by one of the largest original equipment suppliers in the world and meets all form, fit, and performance characteristics of the original equipment part . Like the G.M. Original Equipment pulley, the Litens replacement part is constructed of heavy duty steel for long life and trouble free performance. This pulley is supplied with a new integrated bolt/dust shield to facilitate installation. 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
  • Pre-assembled pulleys save installation time and ensure that all components are assembled to original specifications for both installation and performance
  • 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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ACDelco – Original Equipment Accessory Belt Idler Pulley (Part No.G6020430749ACD)

Original Equipment Accessory Belt Idler Pulley

from

$98.45
Built to look and fit like the original GM part, ACDelco Professional Automotive Belt Tensioners and Pulleys are an ideal replacement for worn equipment. The perfect complement to our full line of belts.

Product Features:
  • OE-Equivalent and a direct fit application.
  • Precision bearing
  • OE High quality pulley assembly
  • Durable long life performance.
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Litens – O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 85 mm Diameter (Part No.900249A)

O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 85 mm Diameter

from

$84.99
This pulley is manufactured 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 in Canada using the O.E. specified design and meets all performance and durability requirements. Heavy duty steel construction for long life and trouble-free performance. Applications include G.M.. Includes a new mounting bolt as well as a new washer/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._

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance
  • Heavy Duty Steel Pulley with close tolerance ball bearing pocket and Electro-deposited coating for superior corrosion resistance.
  • Installation instructions included.
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Gates – DriveAlign½ Belt Drive Idler/Tensioner Pulley (Part No.36177)

DriveAlign½ Belt Drive Idler/Tensioner Pulley

from

$93.99
Product Features:
  • Steel and thermoplastic construction designed to tight manufacturing tolerances for high 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 under hood temperatures
  • Premium bearings eliminate bearing noise
  • Mounting hardware included for some popular applications
  • Reliable operation under severe conditions
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Dayco – Serpentine Idler/Tensioner Pulley: Steel, 90mm Diameter, 30mm Width, 6 Grooves (Part No.89170)

Serpentine Idler/Tensioner Pulley: Steel, 90mm Diameter, 30mm Width, 6 Grooves

from

$60.99
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

Dayco – Dayco, Acc. Belt Idler Pulley (Part No.G6020926410DAY)

Dayco, Acc. Belt Idler Pulley

from

$32.36
Dayco, Acc. Belt Idler Pulley

Dorman – Idler/Tensioner Pulley: Specific Fit, Steel, 76.3 mm Diameter (Part No.419-623)

Idler/Tensioner Pulley: Specific Fit, Steel, 76.3 mm Diameter

from

$16.49
This replacement accessory drive belt idler pulley has been engineered to match the function and performance of the original pulley on select vehicle years, makes and models, properly restoring critical vehicle operations.

Product Features:
  • Direct replacement – this accessory drive belt idler pulley matches the fit and function of the original equipment pulley on specified vehicles
  • Restores performance – fixes a failed, squealing or groaning noise from a worn idler pulley
  • Application specific – reverse engineered from the original design on certain vehicle years, makes and models
  • Trustworthy quality – backed by team of engineers and quality specialists in the United States
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Dorman – Idler Pulley (Pulley only) (Part No.419-603)

Idler Pulley (Pulley only)

from

$11.49
This accessory drive belt tensioner pulley is designed to match the fit and function of the original pulley on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this accessory drive belt tensioner pulley is designed to match the fit and function of the original pulley on specified applications
  • Restores functionality – reliable replacement for an original pulley that has failed due to vibration or corrosion
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

FAQs for 2008 GMC Sierra 3500 HD Idler Pulleys

What are the most popular Idler Pulleys for the 2008 GMC Sierra 3500 HD?

With 5 brands you can trust, our most popular Idler Pulleys for the 2008 GMC Sierra 3500 HD parts are:

What are the best aftermarket Idler Pulleys for the 2008 GMC Sierra 3500 HD?

See what past customers had to say about our highest-rated Idler Pulleys for the 2008 GMC Sierra 3500 HD:
Idler Pulley (Pulley only)
from $13.49
(10)
Idler Pulley (Pulley only)
“Good”