Holley's LS/LT high-mount accessory drive bracket delivers a factory-style appearance, correct belt alignment, and factory stability for engine swaps. It works with a GM R4 A/C compressor (Sanden version also available) and lets you source the alternator, power steering pump, and A/C compressor separately from the salvage yard, parts store, or Holley.
Specifications:
- Choose Your Part: Accessory Bracket
- A/C Compressor Type: R4
- Accessory Drive Style: High-Mount
- Material: Cast Aluminum
- Finish: Cast
- Engine Application: GM Gen III/IV (LS) / GM Gen V LT
- Part Number: 20-131
Requires an application-specific installation kit (21-1, 21-2, or 21-3) for most applications; refer to the Fitment and Required Components Guide to select the correct kit for your crank pulley position. For LT engine installs, refer to the 21-5 LT installation kit instructions before proceeding.
FAQ
What A/C compressor does this bracket work with?
It's designed to work with a GM R4 A/C compressor (a Sanden version is also available).
Does this bracket include the alternator or A/C compressor?
No — this is the bracket only. It's designed to accept commonly available GM alternators, power steering pumps, and A/C compressors sourced separately.
Is an installation kit required?
Yes, an application-specific installation kit (21-1, 21-2, or 21-3) is required for most applications; LT engine installs require kit 21-5.
What engines does this bracket fit?
It fits GM Gen III/IV (LS) and GM Gen V LT engines.
