Product Summary

Universal Fit, Crankshaft Pulley Included

  • Bracketless Accessory Mounting System for Ultra-Easy Assembly - Timing Cover is Integrated into this Bracket / Casting
  • Configurable Heater Hose Connection Options - for Hose Routing Flexibility
  • Holley Premium 150 Amp alternator - Plenty of Power for All Vehicle Systems
  • Easy Wiring of Alternator That Doesn't Require Factory ECU to Excite Alternator
  • Alternator is Tucked in Tight to the Engine - Eliminates Frame Rail or Hood Clearance Issues (Common with Factory Car or Truck Drive Systems)
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Key Specs

Pulley StyleSerpentine
Crankshaft Pulley IncludedYes
Crankshaft Pulley MaterialSteel
Crankshaft Pulley FinishNatural
Crankshaft Pulley Grooves6-groove, serpentine
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Need To Know

Quick and Easy Returns

Return Policy

Holley 20-291 Details

Holley's complete, mid-mount accessory system has all accessories pulled in tighter than other accessory drives. At the heart of the system is a "bracketless" design (patent pending), where the accessories bolt directly to the timing cover for a clean, integrated system. The design offers superb engine visibility to show off your horsepower, not your accessories. Among the many swap friendly features are two optional heater connection configurations. The innovative Holley premium alternator incorporates 6-phase and square wire technology. The compact and reliable SD7 A/C compressor and Type II P/S pump with baffled reservoir are also integrated. The kit utilizes Holley's proven cartridge style water pump. 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 the crank damper. 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.

Features:

  • Bracketless Accessory Mounting System for Ultra-Easy Assembly – Timing Cover is Integrated into this Bracket / Casting
  • Configurable Heater Hose Connection Options - for Hose Routing Flexibility
  • Holley Premium 150 Amp alternator – Plenty of Power for All Vehicle Systems
  • Easy Wiring of Alternator That Doesn't Require Factory ECU to Excite Alternator
  • Alternator is Tucked in Tight to the Engine – Eliminates Frame Rail or Hood Clearance Issues (Common with Factory Car or Truck Drive Systems)
  • Holley Water Pump w/ Cartridge Design – Compact And Easy to Service Without Removing the Water Pump Housing / Timing Cover
  • SD7 A/C Compressor – Small Compact Compressor
  • Type II Power Steering Pump with Baffled Reservoir
  • Power Steering Pump Has Proper Pressure for use with Steering Box on Older Vehicles (Eliminates Steering Box Damage Due to Excessive Pressure)
  • Swivel Water Inlet And Outlet – Allows Custom Radiator Hose Routing
  • OE (Original Equipment) Pulley Ratios for Optimal Accessory Performance
  • No Adapters or Spacers Needed – for Easy Installation
  • Works with Common After-Market and Factory Throttle Bodies and Intakes
  • Choose from Kits in Natural Aluminum or Black Finish – Fits Naturally Aspirated Gen III Hemi Engines (5.7L, 6.1L, and 6.4L)
  • Includes OE Style Damper with Cast in Serpentine Pulley
  • All Accessories are Included; Water Pump, A/C Compressor, Alternator, Power Steering Pump w/ Reservoir, Pulleys And Crank Damper
  • All Plumbing Adapters, Wiring Adapters, Gaskets and Seals are Included
  • Available for VVT (Variable Valve Timing – 2009-Up 5.7L and 2011-Up 6.4L) and Non-VVT (2003-2008 5.7L, and 2005-2010 6.1L) Engines in Natural Cast Aluminum or Black Finish

This accessory drive system fits following VVT Engines:

2009 - Up 5.7L

2011 - UP 6.4L

Holley 20-291 Specifications

KEY SPECS
MFG. Part #20-291
BrandHolley
Pulley StyleSerpentine
Crankshaft Pulley IncludedYes
Crankshaft Pulley MaterialSteel
Crankshaft Pulley FinishNatural
Crankshaft Pulley Grooves6-groove, serpentine
Water Pump MaterialCast Aluminum
Water Pump FinishNatural
Water Pump Pulley IncludedYes
Water Pump Pulley MaterialSteel
Water Pump Pulley GroovesNon-ribbed
Power Steering Pump FinishNatural
Power Steering Pump Reservoir FinishBlack Powder Coated
Power Steering Pump Reservoir IncludedYes
Power Steering Pump Reservoir MaterialPlastic
Power Steering Pump Reservoir StyleIntegral
Power Steering Pump StyleType 2
Power Steering Pulley AttachmentPress Fit
Power Steering Pulley FinishBlack Powder Coated
Power Steering Pulley Grooves6-groove, serpentine
Power Steering Pulley IncludedYes
Power Steering Pulley MaterialSteel
Alternator MaterialCast Aluminum
Alternator FinishNatural
Alternator Amperage150 amp
Alternator Pulley Grooves6-groove, Serpentine
Alternator Pulley IncludedYes
Alternator Pulley MaterialSteel
Alternator Brackets IncludedNo
A/C Compressor FinishNatural
A/C Compressor TypeSanden SD-7
A/C Pulley Grooves6-groove, Serpentine
A/C Pulley IncludedYes
A/C Pulley MaterialSteel
A/C Bracket IncludedNo
Idler Brackets IncludedNo
Idler IncludedNo
Tensioner IncludedYes
Tensioner StyleSpring-loaded
Tensioner Cover IncludedNo
Hardware IncludedYes
GENERAL
Water Pump Pulley FinishBlack powdercoated
Sold in QuantityKit
GTIN Code090127109175

Fitment

  • 5.7 Chrysler Hemi V8

  • 6.1 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.1 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.1 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.2 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.2 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.1 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.2 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.2 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.1 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.1 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 6.4 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

  • 5.7 Chrysler Hemi V8

Customer Impersonation Script