Holley 21-1 LS Acc. Drive Bracket Installation Kit, Standard Alignment
These Holley accessory drive installation kits provide proper spacing for Holley A/C, P/S & Alt accessory drive brackets, so belts ride at the perfect distance on your particular engine.
A Fitment And Required Components Guide helps you locate and source components and provides other notes and helpful hints to figure your distance. Three easy steps will get you going:
- Step one is to determine your belt alignment based on your crank Pulley position on the engine you have.
- Step two is to choose the Holley accessory drive brackets that you need (A/C, Alt & P/S or both).
- Step three is to see which Holley installation kit your set–up requires to line up your accessories with your crank Pulley position. An application specific installation kit (part # 425211, 425212, or 425213) is REQUIRED for most applications.
Note: When referring to guide links below, keep in mind that part numbers shown are MFG numbers without "425" prefix.
Item DetailsInstallation Kit, LS Acc. Drive Brackets,
use with STANDARD belt alignment
(SHORT alignment common on Corvette, CTSG , & G8)
More Like This
Holley 21-3 LS Acc Drive Bracket Install. Kit, Long, Long Style Pump
Holley 21-2 LS Accessory Drive Bracket Installation Kit, Middle Align
Holley 20-131 R4 Compressor LS Accessory Drive AC, PS, Alt Bracket Kit
Holley 20-135 Drivers Side P/S & Alternator LS Acc Drive Bracket Kit
Vintage Air 174001 Front Runner Engine Drive Systems, Chevy LS
Q & A
Pat talks about our red solid core spark plug wire and rajah ends.
Looking for an easy performance upgrade to your ignition system? MSD's line of Ignition Control Boxes offer extreme improvements to drivability and high rpm applications. Here's a look at the differences between the 6 series line-up.