This high-mount LS accessory drive bracket set delivers a factory-style appearance with correct belt alignment and stability for GM LS engine swaps. Universal brackets fit virtually all common LS engines regardless of water pump and harmonic balancer offsets, and utilize commonly available GM alternators, power steering pumps, and A/C compressors. Note: this bracket requires an application-specific installation kit (Part 21-1, 21-2, or 21-3) for assembly.
Specifications:
- Brand: Holley
- Category: Belts and Cooling
- Application: GM LS / GM Gen V LT
- Engine: GM Gen III/IV (LS)
- Accessory Drive Style: High-Mount
- A/C Compressor Type: R4
- Finish: Black
- Material: Cast Aluminum
- Product Type: Accessory Bracket
- Sub Category: Accessory Drive Belt System Components
- Warning: California Proposition 65
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 20-131BK
Works with an R4 A/C compressor and requires the application-specific installation kit; for LS engine swaps, also check body-style-specific engine mount kits for additional fitment requirements.
FAQ
What A/C compressor does this bracket work with?
It's designed to work with an R4 A/C compressor (Sanden version also available separately).
Does this bracket include an installation kit?
No, an application-specific installation kit (Part 21-1, 21-2, or 21-3) is required separately for assembly.
What engines does it fit?
GM LS and GM Gen V LT engines with a mid- or high-mount accessory drive.
What finish is this bracket?
Black cast aluminum.

