This complete Holley LS high-mount A/C accessory bracket kit relocates the compressor up high and away from the frame rail, eliminating the need for notching. It's built for owners who already have a donor engine's P/S pump and alternator system, and includes the compressor, pulleys, and tensioner from OE part suppliers, finished in polished aluminum.
Specifications:
- Accessory Drive Style: High-Mount
- Mounting Side: Passenger's Side
- A/C Compressor Included: Yes (R4)
- Tensioner Included: Yes
- Finish: Polished
- Material: Cast Aluminum
- Engine Application: GM Gen III/IV (LS)
- Pulley Style: Serpentine
- Part Number: 20-140P
Kit includes: 199-100 R4 A/C compressor (8mm pin, R-134a), 199-200 harness pigtail, 97-150 smooth idler pulley, 97-151 LS tensioner assembly, 97-153 grooved idler pulley, and the 20-133 LS A/C bracket. Requires a separate application-specific installation kit (21-1, 21-2, or 21-3) for assembly — see the instruction sheet for the correct kit.
FAQ
Does this kit include the A/C compressor?
Yes, it includes an R4 A/C compressor along with the tensioner and pulleys.
Do I need anything else to install this bracket?
Yes — this bracket requires a separate installation kit (part 21-1, 21-2, or 21-3), selected based on your specific application.
What finish does this kit come in?
It's finished in polished aluminum.
What engines is this bracket designed for?
It's designed for GM Gen III/IV (LS) engine swaps using a serpentine belt.

