Genuine GM 12639468 Air Conditioning Compressor Belt Genuine Oem:Yes, Category 2:Engine Service, Fitment Footnotes:Routingcrk,tens,alt,comp, Item Name:Serpentine Belt, Position:Alternator And Compressor Brand:GM, Fitment Type:Direct Replacement, Superseded Part Number:12600851, Part Ref# On Diagram:ONLY PART REFERENCE #1 ON THE DIAGRAM IS, Category 1:Maintenance & Lubrication Manufacturer Part Number:12639468, Category 3:Belts & Pulleys, Other Part Number:12600851, Quantity Needed:1, Sme:_2271