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Holley Premium Mid-Mount Complete Accessory System

LS Engine Drive includes SD7 A/C Compressor, Alternator, P/S Pump, Tensioner, SFI certified damper w/hard anodized billet crank pulley, Belt, & Pulleys

Damper Style

Engine

Finish

Part # 20-180
5 Reviews

Holley Premium Mid-Mount Complete Accessory System

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$3,260.95
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5

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

See Emissions Details
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 "bracketless" design, where the accessories bolt directly to the water pump for a clean, integrated form. The design offers superb engine visibility to show off your horsepower, not your accessories. Among the many swap friendly features are bottom heater outlets for clearance in tight applications. The Holley designed alternator is just as innovative. This premium alternator utilizes 6-phase technology as found on the C7 Corvette. The water pump also shares its design efficiencies with that of the C7 Corvette. The compact and reliable SD7 A/C compressor and Type II P/S pump with baffled reservoir are also integrated. The Mid-Mount drive completes Holley's trilogy of accessory solutions giving a third option compared to the High and Low-Mount previously released. All three accessory solutions are for LS engines. When we say "complete", we mean complete. The Mid-Mount system comes with everything you need. All accessories are included; the water pump, A/C compressor, Alternator, P/S pump with reservoir, and an SFI certified damper w/hard anodized billet crank pulley. All pulleys and the belt are supplied. Even heater hose adapters, power steering to -6 AN hardline, and the alternator plug/harness are included. Easy assembly was a priority during the entire development of this accessory solution. Color graphical instructions walk you through every step of the ultra-easy installation. The Premium Mid-Mount system comes with dress up pulley covers and an SFI certified damper. Partnered with this damper is a billet 6061-T6 aluminum hard anodized crank pulley. This system is ready for the racetrack if you want to play or just be ready for anything on the street. Patent - www.holley.com/patents/

Features:

  • Bracketless accessory mounting with ultra-easy assembly
  • Bottom outlet heater hose options for swap application clearance
  • LT1 style premium 150 amp alternator
  • LT1 style 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 included
  • Steam tube input port
  • Shortened top outlet nipple for more radiator hose turns and routing room
  • OE pulley ratios for optimal accessory performance
  • No adapters/spacers required!
  • Billet tensioner cover
  • Billet alternator, and compressor pulley covers
  • SFI certified damper w/hard anodized billet crank pulley
  • Works with all common aftermarket and factory Throttle bodies and intakes.
  • Works with VVT applications
  • Works with Hooker turbo manifolds.
  • Fit ALL wet sump LS engines except supercharged. Also will fit dry sump LS engines converted to wet sump.

About Holley

Looking for Holley performance products? We're the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, and more. Buy now!

A/C Compressor IncludedYes
A/C Compressor TypeSD7
Accessory Drive StyleMid-Mount
Alternator Amperage150
Alternator IncludedYes
ApplicationGM LS
Belt IncludedYes
Brand Holley
Choose Your PartAccessory Drive Kits
Damper IncludedYes
Damper StyleSFI Certified
Emission Code5
EngineGM Gen III/IV (LS)
FinishCast
Inlet Size35.4mm/1.4"
MaterialCast Aluminum
Output150 Amps
Power Steering Hardline IncludedYes
Power Steering Pulley IncludedYes
Power Steering Pump IncludedYes
Power Steering Reservoir IncludedYes
Product TypeAccessory Drive Kits
Pulley StyleSerpentine
Sale CategoryEngine
Tensioner IncludedYes
Thermostat IncludedYes
WarrantyLimited 90 Day
Water Neck IncludedYes
Water Pump IncludedYes
Water Pump Pulley IncludedYes
UPC090127029442
Part Number20-180
5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
The power steering pump included can be used Hydroboost systems. Please refer to the flow specs on part number 198-101
Limited 90 Day: See Details
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Some parts are not legal for use in California or other states with similar regulations.