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Holley Mid-Mount Complete Accessory Systems 20-180P Drive Systems, LS Mid-Mount, Serpentine, Alternator, A/C, Water Pump, Power Steering, SFI Damper, Polished Finish, Chevy, 4.8-6.2, Kit

SKU: HLY20-180P

Accessory Drive Systems

Holley Mid-Mount Complete Accessory Systems 20-180P Drive Systems, LS Mid-Mount, Serpentine, Alternator, A/C, Water Pump, Power Steering, SFI Damper, Polished Finish, Chevy, 4.8-6.2, Kit

SKU: HLY20-180P

Accessory Drive Systems
A$8,744.81
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

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Description


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:17:39

Data: v4.2 - Upd: 2026-11-09 03:13:00

Features

Note for Australian and European Markets

Unless otherwise stated, this product may be engineered for use in Left-Hand Drive vehicles. Steering components, pedals, shifters, linkages, wing mirrors, instrument clusters, panhard rods/traction bars, drag links, brake boosters, brake or clutch lines, accelerator cables, heater cores, some master cylinders and adjacent parts can vary between LHD and RHD configurations. In some models compenents such as windscreen wiper arms, motors and linkages could differ in their size and orientation. Items such as floor mats & dash mats may have differences in their structure around the front row (or padding in different locations). In many cases items are identical depending on the design of the vehicle and part, but may have differing mounts, lengths or bolt patterns. Carefully review the product images and details to ensure suitability for your vehicle, or contact StreetFX support if you are unsure. Returns are not accepted for special order products.

(keyword: steering)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X
StreetFX SKU hly20-180P
SFX Item ID 4784668
Accounting SKU hly-20-180P
Manufacturer SKU 20-180P
Manufacturer UPC 090127029466
Alternative References 20-180P, HLY-20-180P, HOL20-180P

Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, A/C, Water Pump, Power Steering, SFI Damper, Polished Finish, Chevy, 4.8-6.2, Kit

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

Product Attributes
BrandHolley
Manufacturer's Part Number20-180P
Part TypeAccessory Drive Systems
Product LineHolley Mid-Mount Complete Accessory Systems
UPC090127029466
Pulley StyleSerpentine
Crankshaft Pulley IncludedYes
Crankshaft Pulley MaterialAluminum
Crankshaft Pulley ColorBlack
Crankshaft Pulley Bolt Hole QuantityThree
Crankshaft Pulley Grooves6-groove, serpentine
Water Pump MaterialCast aluminum
Water Pump ColorPolished
Water Pump Pulley IncludedYes
Water Pump Pulley MaterialSteel
Water Pump Pulley ColorBlack
Water Pump Pulley GroovesNon-ribbed
Power Steering Pump StyleGM Type 2
Power Steering Pump ColorNatural
Power Steering Pump Reservoir IncludedYes
Power Steering Pump Reservoir StyleAttached
Power Steering Pump Reservoir MaterialPlastic
Power Steering Pump Reservoir ColorBlack
Power Steering Pulley IncludedYes
Power Steering Pulley MaterialSteel
Power Steering Pulley ColorBlack
Power Steering Pulley AttachmentPress fit
Power Steering Pulley Grooves6-groove, serpentine
Power Steering Brackets IncludedYes
Power Steering Bracket MaterialAluminum
Power Steering Bracket ColorPolished
Alternator MaterialCast aluminum
Alternator ColorPolished
Alternator Amperage150
Alternator Style1-wire
Alternator Pulley IncludedYes
Alternator Pulley MaterialSteel
Alternator Pulley ColorBlack
Alternator Pulley Grooves6-groove, serpentine
Alternator Fan IncludedNo
Alternator Brackets IncludedYes
Alternator Bracket MaterialAluminum
Alternator Bracket ColorPolished
Air Conditioning Compressor TypeSanden SD-7
Air Conditioning Compressor ColorPolished
Air Conditioning Pulley IncludedYes
Air Conditioning Pulley MaterialAluminum
Air Conditioning Pulley ColorBlack
Air Conditioning Pulley Grooves6-groove, serpentine
Air Conditioning Bracket IncludedYes
Air Conditioning Bracket MaterialAluminum
Air Conditioning Bracket ColorPolished
Idler IncludedYes
Idler Pulley ColorBlack
Idler Brackets IncludedYes
Tensioner IncludedYes
Tensioner StyleSpring-loaded
Tensioner Pulley ColorBlack
Tensioner Cover IncludedYes
Tensioner Cover MaterialAluminum
Tensioner Cover ColorPolished
Hardware IncludedYes
Belt IncludedYes
Coating TypeAnodized
QuantitySold as a kit.
NotesFits LS engines with or without VVT and without a dry sump and/or supercharger.

Compatibility

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