ApplicationCompatible for GM, compatible for Volvo XC 90, compatible for GMC K1500 72 compatible for Chevrolet Swift, compatible for Buick, compatible for Cadillac Compatible for SUBARU FORESTER 15-16SpecificationReplacement Part number: 20804130 , 20939309 , 31317530 009428081 , 20914523 , 178-0884 20997418 , 009428-08 , 26110FJ00FeatureRated Voltage: DC 12V Maximum Vacuum (hg): 29.5 Mounting Insulators Included: Yes Notes: Power Supply DC 12V Quantity: 1 Width (in): 4.000 in.NoteProfessional installation is highly recommended (No Instruction Included) for any other question, please feel free to contact us