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  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
  • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
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    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    • Installation Kit for GM Gen V LT Accessory Drive Installation Kit for GM Gen V LT Accessory Drive Allows Use of High Mount LS Accessory Drive Systems on LT Engine Requires the Use of an LS Water Pump and LT Truck Damper Spacing Holley
    Sale!

    Holley Installation Kit, GM Gen V LT Accessory Drive, High-Mount | 21-5

    Vendor: Holley
    Part Number: 21-5
    Save $39
    $311.95 $350.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
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    Product DetailsFAQReviewsRelated Products

    This installation kit adapts Holley's popular High-Mount LS accessory drive brackets to GM Gen V LT1 engines, using an LS-style center water pump together with the LT truck harmonic balancer. It fits all LT1-style engines except dry sump and supercharged applications, and lets you choose whether to source supplemental accessories from Holley or elsewhere.

    Specifications:

    • Accessory Drive Style: High-Mount
    • Category: Belts and Cooling
    • Engine: GM Gen V LT1
    • Finish: Cast
    • Material: Aluminum
    • Product Type: Accessory Bracket
    • Warranty: Manufacturer's Limited 90 Day Warranty
    • Part Number: 21-5

    Requires an LS-style center water pump (Holley P/N 22-100 or similar) and the LT truck harmonic balancer; no engine modification needed. Does not fit dry sump applications.

    FAQ

    What does this kit let me do?

    It mounts Holley's High-Mount LS accessory drive brackets onto a GM Gen V LT1 engine as a bolt-on solution, no engine modification required.

    What parts are required for installation?

    An LS-style center water pump (Holley P/N 22-100 or similar) and the LT truck harmonic balancer.

    Does it work with dry sump or supercharged LT1 engines?

    No, this kit does not fit dry sump or supercharged applications.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy
    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy
    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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