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Holley 21-5

GM LT Accessory Drive Instillation Kit

Holley 21-5


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Holley 21-5 GM LT Accessory Drive Instillation Kit $149.36
GM LT Accessory Drive Instillation Kit
  • Allows Use of LS Accessory Drive Systems on LT Engine
  • Bolt On
  • Spacers for LS Style Brackets
  • Water Pump Spacers
  • Solenoid Re-Clocking Retainer Ring
  • Front Harness

  • Holley 21-5 Details

    Installation Kits


  • Mounts any of Holley’s popular High Mount accessory drive brackets to LT engines
  • Utilizes conventional LS center water pump
  • No engine modification required - completely bolt-on
  • Hides temperature sensor and harness connector from sight
  • Works with LT Truck Harmonic Balancer
  • Cost Effective and Proven Solution
  • Utilizes conventional single sided belt
  • Easy way to add power steering with your Gen-V LT Engine swap Fitment Notes:
    This accessory drive installation kit must be use with an LS water pump and the LT Truck harmonic balancer. There is only one belt spacing on this accessory drive kit. Corvette and other LT engines must be use the Truck harmonic balancer.
    This spacer kit does not fit any dry sump applications.

  • Holley LS Series Accessory Drive Kits are simple, clean, cost-effective solutions to the accessory drive challenges encountered when swapping a GM LS engine into a muscle car, truck, hot rod, or other vehicle. Holley Kits supply the required brackets and hardware needed for installation yet allow you to choose the source for supplemental accessories and components that are often already on the engine or vehicle. These kits were designed to deliver correct belt alignment, factory stability, and stock-style appearance. Whether sourcing from the salvage yard, local auto parts store, GM parts dealer, or Holley, you pick the accessories that match your needs and budget!

    Click for Fitment Guide #510-20-131
    Click for Fitment Guide #510-20-133
    Click for Fitment Guide #510-20-135

    Note: An application specific installation kit is required for most applications (#510-21-1, #510-21-2, or #510-21-3)

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