This complete high-mount A/C accessory drive kit for GM LS engines moves the compressor up and away from the frame rail, eliminating the need for frame notching. It includes the compressor, pulleys, and tensioner sourced from OE suppliers used on production vehicles today.
Specifications:
- Brand: Holley
- Category: Belts and Cooling
- Engine: GM Gen III/IV (LS)
- Accessory Drive Style: High-Mount
- A/C Compressor Type: SD508
- Tensioner Included: Yes
- Finish: Cast
- Material: Cast Aluminum
- Pulley Style: Serpentine
- Part Number: 20-141
This bracket requires an installation kit for assembly (part 21-1, 21-2, or 21-3, depending on belt alignment) — see the instruction sheet for the correct kit for your application. For LS engine swaps, also check your specific body-style engine mount kit for additional fitment requirements.
FAQ
What's included in this kit?
An SD508 A/C compressor, tensioner assembly with grooved pulley, idler pulley, and the passenger-side LS A/C bracket.
Do I need anything else to install this?
Yes, an installation kit (part 21-1, 21-2, or 21-3) is required for assembly — the correct one depends on your belt alignment.
What engines does this fit?
GM Gen III/IV (LS) engines.
What is the part number?
Holley part number 20-141.

