ACDelco 12590963 | A/C Drive Belt Idler Pulley Bracket

Part Number
A/C Drive Belt Idler Pulley

Fits: 04-12 Chevrolet Colorado, 04-12 GMC Canyon, 06-10 Hummer H3, 06 Isuzu i-280, 06 Isuzu i-350, 07-08 Isuzu i-290, 07-08 Isuzu i-370, 09-10 Hummer H3T

Special Price $44.19 Regular Price $51.99
In stock
Only 1 left
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Estimated Ship Date: 1 Business Day or Less
ACDelco GM Original Equipment A/C Drive Belt Idler Pulley Brackets attach the idler belt pulley and are GM-recommended replacements for your vehicle's original components. The idler pulley routes the drive belt to accommodate other engine compartments. These assemblies have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. ? WARNING: Cancer and Reproductive Harm -



  • Chevrolet;GMC;Hummer;Isuzu
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Manufactured to GM OE specification for fit, form, and function
  • Offering the quality, reliability, and durability of GM OE


Height (in)2.83
Height (mm)71.89
Mounting Hardware IncludedNo
Mounting Hole Quantity3
Programming RequiredNo
Weight (lb)1.51




  • 2006-2010 Hummer H3
  • 2006-2006 Isuzu i-350
  • 2007-2008 Isuzu i-370
  • 2006-2006 Isuzu i-280
  • 2004-2012 Chevrolet Colorado
  • 2007-2008 Isuzu i-290
  • 2009-2010 Hummer H3T
  • 2004-2012 GMC Canyon
Customer Questions
Does AC Delco make Ford parts?
No, AC Delco produces parts primarily for General Motors vehicles and does not make parts specifically for Ford vehicles.
Can I use AC Delco parts to replace OEM parts?
Yes, in most cases AC Delco parts can be used as a replacement for OEM parts. However, it's important to ensure that the parts are compatible with your specific make and model of vehicle.
What AC Delco oil filter do I need?
AC Delco offers a variety of oil filters that are compatible with different makes and models of vehicles. To determine which AC Delco oil filter you need, consult your vehicle's owner's manual or use our online filter lookup tool that matches the make, model, and year of your vehicle.
Can a serpentine belt cause smoke?
Yes, a serpentine belt can cause smoke. A serpentine belt is an essential component of a vehicle's engine system. It drives various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. If the serpentine belt becomes worn, damaged, or misaligned, it can cause friction and generate smoke.
Why is my serpentine belt squealing?
The serpentine belt can squeal due to various reasons, including tension issues, worn-out belt, or a problem with the belt's pulleys.
Is my serpentine belt too tight?
If your serpentine belt is causing issues like excessive noise or accelerated wear on the pulleys, it may indicate that the belt is too tight.
Why did my serpentine belt come off?
Serpentine belts can come off due to factors such as belt wear, improper tension, misaligned pulleys, or a faulty tensioner.
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