International 9300/9370 AC Driers & Compressors

Frequently Asked Questions About International 9300/9370 AC Driers & Compressors

What is the difference between the AC drier and the AC compressor, and do I need both?

The AC drier (also called a receiver drier or accumulator) removes moisture and contaminants from the refrigerant system and helps filter out debris, while the compressor is responsible for pressurizing and circulating refrigerant through the system. They serve different functions, so unless you are doing a full AC system rebuild, you typically only need to replace the specific component that has failed. However, many technicians recommend replacing the drier any time the system is opened up, since it is inexpensive insurance against moisture contamination.

How do I know if my compressor or drier needs to be replaced?

Common signs of a failing compressor include unusual noises (grinding, squealing, or clicking), the AC blowing warm air, visible oil leaks around the compressor, or the compressor clutch not engaging. A failing drier often shows up as reduced cooling performance, ice buildup on the drier itself, or moisture/contamination found during a system inspection. If you are unsure, a qualified technician can perform pressure tests and inspect the system to pinpoint the exact issue before you order parts.

Will these parts fit my specific International 9300 or 9370 model year?

AC system components can vary by model year and engine configuration on the International 9300 and 9370, so it is important to verify fitment using your VIN or existing part number before purchasing. If you are not certain which drier or compressor your truck uses, our parts team can help confirm compatibility so you avoid ordering the wrong component.

Do I need to evacuate and recharge the AC system after replacing the compressor or drier?

Yes. Any time you replace the compressor or drier, the system needs to be properly evacuated to remove air and moisture, then recharged with the correct type and amount of refrigerant. This requires AC-specific recovery and charging equipment, so most owner-operators have this work done by a qualified technician or shop unless they already have the proper tools and certification to handle refrigerant.

Are these replacement parts new, remanufactured, or used?

Product condition varies by listing, so be sure to check the specific product description on each item page. We carry a mix of new and quality used parts, and each listing will clearly indicate the condition so you can choose what fits your budget and needs.