Holley LS Accessory Drive Bracket-A/C, P/S & Alt Brackets-works with R4 compressor AA0710AF2T57 2 in Diameter Pipe

2 in Diameter Pipe

Coil Mounting Bosses

1/2 Diameter

NPT/Pipe thread is a tapered thread

Holley LS Accessory Drive Bracket-A/C, P/S & Alt Brackets-works with R4 compressor AA0710AF2T57 2 in Diameter PipeLS Accessory Drive Bracket A C, P S & Alt Brackets works with R4 compressor This bracket REQUIRES an installation kit for assembly (Part HLY21 1, HLY21 2, OR HLY21 3, see Fitment Guide attached for the correct installation kit for your application). 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.