NEW A/C COMPRESSOR This is a listing for a brand new replacement A/C Compressor(Compressor may contain PAG oil for lubrication during shipping; please drain and replace) UAC is the premier aftermarket brand in the industry with over 30 years of experience. Applications: 2016-2020 Buick Envision 2.0L 2017-2020 Buick Envision 2.5L OEM and Competitor Interchange: Technical Specifications:.