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  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
  • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • 20-155_dimens.jpg
    • 20-156_01.jpg
    • 20-156_05.jpg
    • 20-156_06.jpg
    • 20-156_07.jpg
    • 20-156_08.jpg
    • 20-156_09.jpg
    • 20-156_11.jpg
    • 20-156_12.jpg
    • 20-156_13.jpg
    • lowaccd18107.jpg
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    • Low-Mount LS Drive System (alt, P/S W/o A/C) Driver's Side Holley
    Sale!

    Holley Low-Mount LS Drive System, Alternator & P/S w/o A/C, Driver's Side | 20-156

    Vendor: Holley
    Part Number: 20-156
    Save $175
    $1,399.95 $1,574.95

    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
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    Product DetailsFAQReviewsRelated Products

    This low-mount LS accessory drive system tucks the alternator and power steering components in tighter to the block and mounted lower, for a compact package on the driver's side without A/C.

    Specifications:

    • Brand: Holley
    • Category: Belts and Cooling
    • Engine: GM Gen III/IV (LS)
    • Accessory Drive Style: Low-Mount
    • Alternator Included: Yes, 105 Amps
    • Power Steering Pump, Pulley, Hardline & Reservoir Included: Yes
    • Belt Included: Yes
    • Material: Cast Aluminum
    • Pulley Style: Serpentine
    • Part Number: 20-156

    Fits middle and long accessory spacing (installation kit 21-4 required for long spacing). The included power steering pump can be used with Hydroboost systems — refer to the flow specs on part 198-101. The P/S hardline works with most Type II power steering pumps.

    FAQ

    What's included in this drive system?

    An alternator (105 amp), power steering pump with hardline, pulleys, tensioner, and belt for the driver's side, without A/C.

    What accessory spacing does it fit?

    Middle and long accessory spacing; long spacing requires installation kit 21-4.

    Can this power steering pump work with a Hydroboost system?

    Yes, refer to the flow specs on part 198-101 for compatibility.

    What is the part number?

    Holley part number 20-156.

    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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