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Vehicle Info NeededHOLLEYPART NUMBER: 510-21-3BK
21-3BK Long Belt Installation Kit
$19095$238.95You Save$48.00
Ships on Sep 03, 2026
Lowest Price GuaranteeGM Gen III/IV LS Accessory Drive Installation Kits
Long Belt Installation KitBelt Alignment Commonly Used on Trucks and 2010-Up Camaro Black Finish
Holley 21-3BK Features:
Installation Kit, LS Acc. Drive Brackets, use with LONG belt alignment (alignment common on Trucks & '10-UP Camaro)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 # 21-1, 21-2, or 21-3) is REQUIRED for most applications.Effective Solutions to Accessory Drive Installation Difficulties
Holley High-Mount Accessory Drive Kits position components well above the cross-member for the room you need to complete your engine swap project.
Holley Low-Mount Accessory Drive Systems
Holley Mid-Mount Accessory Drive Systems
Part TypeAccessory Drive Belt Kit
Product LineHolley High-Mount Accessory Drive Systems
BrandHOLLEY
Package Height3.1
Package Width7.3
Package Length16.1
Weight4.47 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number21-3BK
Package Qty1
Package TypeEA
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