Buying a replacement A/C idler pulley for the first time can be really complicated and confusing. The best way to overcome this challenge is to equip yourself with sufficient and relevant information about this car component. If you know the different types, sizes, and functions of the idler pulley, you can easily recognize the appropriate idler pulley for your vehicle. If you want to learn more about this essential auto part, read on.
The precise size
There are no ifs, buts, and maybes when you're buying car components. Precision is the primary key in finding the auto part that fits your car perfectly. To find an A/C idler pulley that fits just right, take note of the exact dimensions of the following:
Belt width- this is the thickness or girth of the serpentine belt that is wrapped around the pulley. To identify the right size of the pulley's groove, measure the belt's width. Some pulley have a single groove, while some have six. Buy an idler pulley that has the appropriate groove measurement.
Pulley diameter- this measurement tells you of the pulley can fit or not inside the car's A/C assembly. Use a special measuring tool, which you can purchase in a car parts store, to determine the accurate diameter size of the pulley.
The mounting position
The mounting location of pulleys varies. It depends on the car's model and type. Some are positioned in the driver's side, while some are in the passenger's side. What you need to do to verify the idler's location is to find the A/C idler pulley in your car. Pop the hood open and inspect the parts. If it's difficult to find it, consult the vehicle owner's manual. The manual includes all the vital information about your car's A/C idler pulley.
The quality of materials used
You can predict how long the idler pulley can last by looking into the quality of materials used in its production. Steel and thermoplastic are just two of the best materials used in manufacturing A/C idler pulleys. Between the two, a thermoplastic pulley is popular and common among old and modern car models. It is compatible to almost all vehicle types. Because of its light weight, it turns very smoothly inside the engine. This type of pulley is appropriate for standard cars. For race cars, trucks, and other utilitarian vehicles, a steel pulley works better. It's tough and rigid, thus it withstands the intensive vibrations and friction. Steel pulleys tend to last longer than thermoplastic pulleys.