Holley Premium Mid-Mount LS7 Complete Accessory System 20-190

Holley (20-190): Premium Mid-Mount LS/LS7 Complete Accessory System

Holley’s premium mid-mount complete accessory system has all accessories pulled in tighter than other accessory drives. At the heart of the system is a patent-pending “bracketless” design that allows the accessories to bolt directly to the water pump for a clean, integrated form factor. The design offers superb engine visibility to show off your horsepower—not your accessories.

When Holley says “complete,” they mean it. Full of swap-friendly features, this mid-mount system comes with everything you need, including the water pump, A/C compressor, alternator, P/S pump with reservoir, crank damper, all pulleys and belts, heater hose adapters, power steering to -6 AN hardline, and the alternator plug/harness. Color graphical instructions walk you through every step of the ultra-easy installation. The 20-190 system is ready for the racetrack or the street.

Features

  • Fits LS7 and LS engines with dry sump and without supercharger.
  • Bracketless accessory mounting with easy assembly.
  • Bottom outlet heater hose options for swap application clearance.
  • LT1-style hairpin 150-amp alternator and water pump cartridge design.
  • Compact SD7 A/C compressor.
  • Type II power steering pump with baffled reservoir.
  • P/S adapter hardline to AN -6 adapter.
  • Steam tube input port and billet tensioner cover.
  • Shortened top outlet nipple for more radiator hose turns and routing room.
  • OE pulley ratios for optimal accessory performance.
  • No adapters/spacers required.
  • Billet alternator and compressor pulley covers.
  • SFI-certified damper with hard anodized billet crank pulley.
  • Works with all common aftermarket and factory throttle bodies and intakes.
  • Works with Hooker turbo manifolds.

Holley Premium Mid-Mount LS7 Complete Accessory System 20-190

Ready to buy? Need help with the install? To find your nearest Parts Pro affiliate, see our Store Locator. Or join the conversation at the Parts Pro Facebook page!

Though this is not a paid review, this content has been produced by The AAM Group in support of manufacturers with whom it has a business relationship.