Holley's LS accessory drive installation kit provides the correct spacing for Holley A/C, power steering, and alternator drive brackets so belts ride at the right distance for a middle-alignment LS engine setup, common on F-body and GTO applications. The aluminum kit includes the hardware needed for installation and won't rust like steel bracket spacers.
Specifications:
- Accessory Drive Style: High-Mount
- Belt Alignment: Middle
- Engine: GM Gen III/IV (LS)
- Finish: Black
- Material: Aluminum
- Thickness: 0.866" Driver's Side / 1.397" Passenger Side
- Part Number: 21-2BK
An application-specific installation kit (21-1, 21-2, or 21-3) is required for most Holley LS accessory drive bracket setups; bolts included with the spacer kits are not sold separately.
FAQ
What is the Holley 21-2BK installation kit used for?
It provides the correct spacer thickness for Holley LS accessory drive brackets set up with middle belt alignment, an alignment common on F-body and GTO LS engine swaps.
What material is the 21-2BK kit made from?
Anodized black aluminum, which is lighter than steel and resists rust.
Does the 21-2BK come with hardware?
Yes, hardware for installation is included, though the bolts that ship with the spacer kits are not sold separately.
