Holley is pleased to offer simple, clean, cost effective solutions that solve the accessory drive challenges encountered when swapping a GM LS engine into a muscle car, truck, hot rod or other vehicle. These brackets were designed to deliver a factory style appearance, correct belt alignment and factory stability.
NOTE: This bracket REQUIRES an installation kit for assembly (Part 21-1, 21-2, OR 21-3, see Fitment Guide below for the correct installation kit for your application).
Holley's kits supply the required brackets and hardware needed for installation, but allow you to choose the source for supplemental accessories and components that are often already on the donor engine or host vehicle. Whether sourcing from the salvage yard, the local auto parts store, your GM parts dealer, or Holley, you pick the accessories that match your needs and budget!
A Fitment And Required Components Guide helps you locate and source components and provides other notes and helpful hints. 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.
Replacement hardware kit is 97-171.
Features:
- The most cost effective LS bracket solution on the market!
- Universal brackets fit virtually all common LS engines regardless of water pump and harmonic balancer offsets reducing cost and complexity compared to competitive products
- Simple, dedicated installation kits allow easy fitment to Corvette, F-Body or Truck drive offsets
- Utilizes commonly available and affordable GM alternators, power steering pumps and A/C compressors
- A/C brackets position the compressor high above the cross-member but below the hood line for easy installation and great looks
- A/C brackets are also a bolt on solution to relocate A/C compressor on engines using a GM Corvette accessory drive system
- A/C bracket accepts GM R4 compressor (Sanden version now available)
Fits Sanden SD508 or SD7 Comp.; Requires application specific installation kit
***For all LS Engine Swaps-Please refer to your specific body style engine mount kits for additional modification and fitment requirements.
***NOTE for LT Applications: If installing on LT application refer to 21-5 LT installation kit instructions before proceeding.
Installation Notes:
Fits Sanden SD508 or SD7 Comp.; Requires application specific installation kit
***For all LS Engine Swaps-Please refer to your specific body style engine mount kits for additional modification and fitment requirements.
***NOTE for LT Applications: If installing on LT application refer to 21-5 LT installation kit instructions before proceeding.
About Holley Performance Products
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!
