• Holley Hardware 20-135P Item Image
1 1
Holley EFI

Holley LS/LT Accessory Drive Bracket - Driver's Side P/S & Alt Bracket

Holley LS/LT Accessory Drive Bracket - Driver's Side P/S & Alt Bracket

sku: 1D549 | mpn: 20-135P
$275.80
$275.80
Sale Sold out

Out of stock

Not sure this is the right part? Ask us to check fitment. Include your year, make, model, engine and manufacturer part number.

Need this part?

This item is currently unavailable. Ask us about availability or help finding a suitable replacement.

Ask about availability or fitment

Year, make, model and engine help us check fitment.

We'll reply to your inquiry by email. This is not an automatic restock alert.

Shipping & returns

This selection is unavailable. Ask us to confirm availability and timing.

Shipping details

In-stock orders are processed within 48 hours; transit time is additional.

International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.

Read the shipping policy
Return policy

NOTE: This bracket MAY REQUIRE an installation kit for assembly (Part 21-2 OR 21-3, see Fitment Guide below for details).

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.

Key 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 and power steering   pumps
  •  OEM spec flanged head hardware included to match your factory LS engine   hardware
  •  Complete accessory drive kits include all components and accessories are also   available
  •  Ideal for crate engines, take out motors and engine builders!

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.
View full details

Vehicle fitment