ACDelco 12560345 | A/C Drive Belt Tensioner

Part Number
A/C Drive Belt Tensioner

Fits: 97-04 Chevrolet Corvette, 98-02 Chevrolet Camaro, 98-02 Pontiac Firebird, 04-06 Pontiac GTO

Special Price $75.64 Regular Price $112.99
In stock
Only 9 left
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Estimated Ship Date: 1 Business Day or Less
ACDelco GM Original Equipment A/C Drive Belt Tensioners keep the proper amount of tension on the drive belt by pushing the drive belt tensioner pulley against the belt. The tensioner may be manually or automatically tensioned depending on application. Drive belt tensioners are part of the accessory drive belt system. This original equipment A/C drive belt tensioner is a GM-recommended replacement for your vehicle's original component and has 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;Pontiac
  • 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
  • Restores accessory drive belt system, eliminate noisy tensioner pulley


Belt TypeSerpentine
ColorBlack, Natural
Height (in)2.5
MaterialPlastic, Aluminum, Steel
Mount Hole Diameter (in)0.472 in
Mount Hole Diameter (mm)12 mm
Mount Hole Quantity1
Programming RequiredNo
Pulley Center Bore Diameter (in)0.669 in
Pulley Center Bore Diameter (mm)17 mm
Pulley Outside Diameter (in)2.6
Pulley Width (in)0.79 in
Pulley Width (mm)20 mm
Weight (lb)0.93




  • 1998-2002 Pontiac Firebird
  • 2004-2006 Pontiac GTO
  • 1997-2004 Chevrolet Corvette
  • 1998-2002 Chevrolet Camaro
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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