AC BYPASS PULLEY
Air Conditioning systems are constantly subjected to extreme temperature changes. Failures associated with age and operation can range from worn out clutches, leaking hoses, leaking seals, condenser and/or evaporator failures, to catastrophic compressor bearing failures. Often the compressor idler bearing seizes preventing the serpentine belt from rotating. Bearing seizures cause the belt to break, leaving the driver stranded. Air conditioning system repairs can be quite expensive, often exceeding the value of the vehicle. Repairs, depending on the number of parts that have to be replaced, can range from $1000 - $2000.
An engine with a seized A/C compressor idler bearing cannot be driven. A torn or broken serpentine belt due to a seized A/C compressor idler bearing has no drive for the water pump, power steering pump, A/C compressor, etc, effectively rendering the vehicle inoperative. The owner of an older vehicle with high miles may not wish to invest in a repair that can cost from $1000 - $2000 dollars.
Choices range from replacing or repairing the A/C compressor to repairing the complete A/C system. Installing a salvage yard compressor is another choice, but not always preferable. The salvage yard unit may also fail quickly. In some cases it may be possible to bypass the compressor with a shorter belt, but not always. Often the vehicle is not repaired and is junked.
Remove the defective A/C compressor and install a new A/C Bypass Pulley Assembly from Monster Auto Parts, Install an OE sized belt to return the belt drive configuration to the OE Specifications and allow the other systems that require a belt drive to operate normally.