It's called the receiver/dryer, its main function is not to filter but it does to some extent filter, some models have screens right at the compressors low side line inlet. What kind of problem are you experiencing?
Truck belongs to my son and I'm going up for the 4th bringing my gauges and vaccum pump to check his system. He says it just stopped blowing cold air. I just wanted to know about the in-line filter, if there is one or not. More will be revealed upon testing. Thanks.
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