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 long-alignment LS engine setup, common on trucks and 2010-and-up Camaro applications. The aluminum kit includes the hardware needed for installation and won't rust like steel spacers.
Specifications:
- Accessory Drive Style: High-Mount
- Belt Alignment: Long
- Engine: GM Gen III/IV (LS)
- Finish: Black
- Material: Aluminum
- Thickness: 1.589" Driver's Side / 2.119" Passenger Side
- Part Number: 21-3BK
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 21-3BK installation kit used for?
It provides the correct spacer thickness for Holley LS accessory drive brackets set up with long belt alignment, common on trucks and 2010-and-up Camaro LS swaps.
What material is the 21-3BK kit made from?
Anodized black aluminum, lighter than steel and rust-resistant.
Does the 21-3BK come with hardware?
Yes, installation hardware is included, though the bolts shipped with the spacer kits aren't sold separately.
