INSTALL KIT LS ACC DRV BRACKETS USE WITH

The Holley 21-2BK is a black accessory drive installation kit designed for Holley A/C, P/S, and Alt accessory drive brackets. It provides proper spacing to ensure belts align correctly with your engine's crank pulley position. This kit is intended for use with middle belt alignment common on F-body and GTO applications.

This kit is part of a three-step process to correctly install accessory drive brackets. It requires users to first determine their belt alignment based on crank pulley position, then select the appropriate Holley accessory drive brackets, and finally use an installation kit like the 21-2BK to ensure proper alignment. An application-specific installation kit is mandatory for most setups.