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, in a natural cast finish.
Specifications:
- Accessory Drive Style: High-Mount
- Mounting Side: Passenger's Side
- A/C Compressor Included: Yes (R4)
- Tensioner Included: Yes
- Finish: Cast (Natural)
- Material: Cast Aluminum
- Engine Application: GM Gen III/IV (LS)
- Pulley Style: Serpentine
- Part Number: 20-140
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 has a natural cast aluminum finish.
What engines is this bracket designed for?
It's designed for GM Gen III/IV (LS) engine swaps using a serpentine belt.

