A/C Compressor Drive Belt
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The outward appearance of the belt (1) is similar to the current design serpentine belt. The reinforcing cord provides its unique qualities. The belt cord is made of a polyamid material. The polyamid cord is more elastic than the more traditional aramid or polyester cord designs. A tensioner is not needed.
Polyamid cord, when combined with a more elastic backing compound, ensures the belt is able to maintain the specified tension within the specified range of usage.