Chev LS Series Engines Air Conditioning Bracket R4 Compressor R/H/S # HO20-133Chev LS Series Engines Air Conditioning Bracket R4 Compressor R H S # HO20 133 Holley is pleased to offer simple, clean, cost effective solutions that solve the accessory drive challenges encountered when swapping a GM LS engine into a muscle car, truck, hot rod or other vehicle. These brackets were designed to deliver a factory style appearance, correct belt alignment and factory stability. Key Features: The most cost effective LS bracket solution on