ACDelco Accessory Belt Drives

ACDelco V Belts are replacement belts for Accessory Belt Drive Systems (ABDS) and other serpentine belt applications. They are designed using advanced manufacturing technology and premium EPDM rubber construction to provide customers with superior ABDS and new-vehicle-type performance.


• Belt of choice by professional technicians, lasting 50-60% longer than retail belts.
• Precision dimension control of rib profile transmits load efficiently throughout the ABDS allowing components to operate at optimum levels.
• Able to operate and accept misalignment in the ABDS system better than other serpentine belts.
• Flexible construction allows the belt to withstand billions of topside and backside bends resulting in a long belt life.
• Meets or exceeds SAE J1459.


• Rubber Loss: (most common belt wear) a belt wear gauge measures rubber loss, which can result in reduced power transfer from the crank to the accessories.
• Glazing: shiny spots can indicate a slipping belt that isn’t properly transferring power to accessories.
• Pilling: worn rubber can fill in grooves and cause noise, heat, vibration, and excessive wear.
• Abrasion: wear along the side could indicate misalignment due to a failed tensioner.
• Cracking: older neoprene belts crack as they near the end of their life cycle and often need to be replaced.
• Engine stops or backfires.
• The belt is producing a squealing noise.
• Headlights dim while driving.
• Loss of battery charge.


• Do not use belt dressings to stop belt slippage or noise. These are oil based and may cause belt deterioration.
• Never twist a belt more than 90 degrees during inspection. This may damage the tensile cords and cause premature failure.
• Replace V-belts after 3 to 4 years, or every 58,000 to 77,000 kilometers.
• Use an approved tension gauge to check belt tension.
• Check for proper belt tension after 800 to 1,600 kilometers following belt installation. Recheck often, at least twice a year or every 10,000 kilometers.


Q: Could a belt tear during use?
A: Yes. This may be indicative of an alignment issue or a failed tensioner.

Q: Will I know immediately if a belt tears?
A: Yes. You may lose your power steering or the engine may stall . Your car is not drivable when your drive belt fails.

Q: Are there steps I can take to ensure a longer belt life?
A: Yes. The leading causes of belt failure are improper tension and misaligned pulleys. Both these conditions cause excessive heat which leads to belt failure. Have your belts checked every 5,000 kilometers for belt wear, proper tension, and pulley alignment.

Q: Is there a way to repair a torn belt?
A: No. When the belt backing has been torn or cracked, the belt should be replaced.

Q: Can I use the same belt for multiple uses?
A: No. Use the belt in the way it’s listed in the ACDelco belts and hoses catalog.

Q: Will a worn belt affect fuel consumption ?
A: No. Remember the leading cause of belt failure is improper tension and misaligned pulleys. Improper tension will cause the belt to slip and you may notice a loss of performance from the air conditioning system as well as increased heat under the hood. High heat can lead to premature accessory failure.