This installation kit provides the proper spacing for Holley A/C, power steering, and alternator accessory drive brackets on LS engines with middle belt alignment, common on F-body and GTO applications.
Specifications:
- Brand: Holley
- Category: Accessory Drives
- Engine: GM Gen III/IV (LS)
- Accessory Drive Style: High-Mount
- Belt Alignment: Middle
- Material: Aluminum
- Finish: Cast
- Thickness: 0.866" Driver's Side / 1.397" Passenger Side
- Part Number: 21-2
An application-specific installation kit (21-1, 21-2, or 21-3) is required for most Holley accessory drive bracket setups to line up accessories with your crank pulley position. Bolts included with the spacer kits are not sold separately.
FAQ
What does this installation kit do?
It provides proper spacing so Holley A/C, power steering, and alternator brackets line up with your crank pulley and belts ride at the correct distance.
Which belt alignment is this kit for?
Middle belt alignment, common on F-body and GTO applications.
Is hardware included?
Yes, necessary installation hardware is included; the bolts are not sold separately from the kit.
What is the part number?
Holley part number 21-2.

