Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Holley Mid-Mount Complete Accessory Systems 20-182 Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Clockwise, Tensioner, SFI Damper, Natrual Finish, Chevy, 4.8-7.0L, Kit

SKU: HLY20-182

Accessory Drive Systems

Holley Mid-Mount Complete Accessory Systems 20-182 Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Clockwise, Tensioner, SFI Damper, Natrual Finish, Chevy, 4.8-7.0L, Kit

SKU: HLY20-182

Accessory Drive Systems
A$6,023.80
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

IMPORTANT NOTICE: Includes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.

Holley Mid-Mount complete accessory systems achieve what no other accessory bracket systems have: eliminate the brackets! This pulls in all the accessories tighter than other accessory drives by bolting directly to the water pump for a clean, integrated form. They offer superb engine visibility to show off your horsepower, not your accessories.

These systems have many swap-friendly features and share several design efficiencies with that of the C7 Corvette—plus they are truly complete. They come with everything you need: all accessories, all pulleys, the belt, heater hose adapters, and the alternator plug/harness, as well as color graphical instructions. Holley Mid-Mount complete accessory systems are available in several versions and finishes to match your GM application. Order the kit designed to fit your engine.

Features and benefits may include:

* LT1-style hairpin premium 150 amp alternator
* LT1-style water pump cartridge design
* Compact and reliable SD7 A/C compressor
* Type II power steering pump with baffled reservoir
* Power steering adapter hardline to AN -6 adapter
* OE pulley ratios for optimal accessory performance
* Bottom outlet heater hose options for swap application clearance

Part Type

Accessory Drive Systems

Data: v4.2 - Upd: 2026-10-17 03:06:44

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
20-182
Product Attributes - Part Type
Accessory Drive Systems
Product Attributes - Product Line
Holley Mid-Mount Complete Accessory Systems
Product Attributes - UPC
090127053065
Product Attributes - Pulley Style
Serpentine
Product Attributes - Crankshaft Pulley Included
Yes
Product Attributes - Crankshaft Pulley Material
Aluminum
Product Attributes - Crankshaft Pulley Color
Black
Product Attributes - Crankshaft Pulley Bolt Hole Quantity
Three
Product Attributes - Crankshaft Pulley Grooves
6-groove, serpentine
Product Attributes - Water Pump Material
Cast aluminum
Product Attributes - Water Pump Color
Natural
Product Attributes - Water Pump Rotation
Counterclockwise
Product Attributes - Water Pump Pulley Included
Yes
Product Attributes - Water Pump Pulley Material
Steel
Product Attributes - Water Pump Pulley Color
Black
Product Attributes - Water Pump Pulley Grooves
Non-ribbed
Product Attributes - Power Steering Pump Reservoir Included
No
Product Attributes - Power Steering Pulley Included
No
Product Attributes - Power Steering Brackets Included
No
Product Attributes - Alternator Material
Cast aluminum
Product Attributes - Alternator Color
Natural
Product Attributes - Alternator Amperage
150
Product Attributes - Alternator Style
1-wire
Product Attributes - Alternator Pulley Included
Yes
Product Attributes - Alternator Pulley Material
Steel
Product Attributes - Alternator Pulley Color
Black
Product Attributes - Alternator Pulley Grooves
6-groove, serpentine
Product Attributes - Alternator Fan Included
No
Product Attributes - Alternator Brackets Included
Yes
Product Attributes - Alternator Bracket Material
Aluminum
Product Attributes - Alternator Bracket Color
Natural
Product Attributes - Air Conditioning Pulley Included
No
Product Attributes - Air Conditioning Bracket Included
No
Product Attributes - Idler Included
No
Product Attributes - Idler Brackets Included
No
Product Attributes - Tensioner Included
Yes
Product Attributes - Tensioner Style
Spring-loaded
Product Attributes - Tensioner Pulley Color
Black
Product Attributes - Tensioner Cover Included
No
Product Attributes - Hardware Included
Yes
Product Attributes - Belt Included
No
Product Attributes - Coating Type
Anodized
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Includes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.

Reference Information

Brand Name/s Holley
StreetFX SKU hly20-182
SFX Item ID 4783264
Supplier Item Code 4783264
Manufacturer SKU 20-182
Manufacturer UPC 90127053065
Alternative References HOL20-182, 4.8-7.0L

Compatibility

Application Data
  • UniversalNo
    MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
    Application NotesIncludes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.
  • UniversalNo
    MakeCHEVROLET
    Beginning Year1999
    Ending Year2014
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
    Application NotesIncludes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.
  • UniversalNo
    MakeCHEVROLET
    Beginning Year1999
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
    Application NotesIncludes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.
  • UniversalNo
    MakeCHEVROLET
    Beginning Year1999
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Application NotesIncludes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2006
    Ending Year2015
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.0L/427
    Application NotesIncludes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.
  • UniversalNo
    MakeCHEVROLET
    Beginning Year2008
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Application NotesIncludes SFI certified harmonic balancer. Will not work with dry sump or supercharged applications.

Loading compatibility information...