SKU: 72642788078

Holley Premium Polished Mid-Mount Complete Accessory System - 20-180P

Sale price$1889.97 Regular price$2099.97
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Description

Holley Premium Polished Mid-Mount Complete Accessory System - 20-180POverview: 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 (Patent Pending), 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

Overview:

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 (Patent Pending), 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.

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.
  • Fits ALL LS engines except with dry sump and/or supercharger.
  • Polished Finish

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

A/C Compressor Included Yes
A/C Compressor Type SD7
Accessory Drive Style Mid Mount
Alternator Amperage 150
Alternator Included Yes
Application GM LS
Belt Included Yes
Brand Holley
Choose Your Part Accessory Drive Kits
Damper Included Yes
Damper Style SFI Certified
Emission Code 5
Engine GM LS
Finish Polished
Inlet Size 35.4mm/1.4"
Material Cast Aluminum
Output 150 Amps
Power Steering Hardline Included Yes
Power Steering Pulley Included Yes
Power Steering Pump Included Yes
Power Steering Reservoir Included Yes
Product Type Accessory Drive Kits
Pulley Style Serpentine
Tensioner Included Yes
Thermostat Included Yes
Warranty Limited 90 Day
Water Neck Included Yes
Water Pump Included Yes
Water Pump Pulley Included Yes
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SKU: 72642788078

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Ryan
Lexington, US
★★★★★ 1
One Star
Format: Paperback
Exactly the same as the free PDF I downloaded online for my student, only this costs $26 plus tax.
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Reviewed in the United States on April 3, 2017
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Amazon Customer
Houston, US
★★★★★ 5
The best programming book you will ever read
Format: Paperback
This is without a doubt the best introduction to any programming language you will find. This book takes a hands on approach to learning Python. Concepts are explained clearly and examples and counter-examples are littered throughout each chapters. I like the direct/no waste time with useless preamble approach to explaining key concepts. The explanations are as succinct as it can get. The writer give general advice like not making your solution too generic initially but focus on solving the problem at hand first and then make the code more elaborate. The writer give off a patient tone as he encourages the reader to not be too hard on themselves when they make mistakes but view this as part of the learning process. He gives his own experience and also that of other programmers to encourage the reader to realistically evaluate their circumstances. What I like most about this book is that the exercises are intersperced between the sections within the chapters. That way you get to practice just after learning a new concept. There are final exercises incorporating what was covered in the chapter, the they do not seem to be a summary of all the content. I am reviewing now 23/02/2025. I have read the first 9 chapters and i am currently on chapter 10. When I am done i will update this review. I use Jupter Notebooks to complete exercises. I head the first cell with the problem number and title and set it as a mark-down cell so it heads that mini section and the code window below contains my solution. That way I have all exercises for a chapter in one file and can easily scroll up to see previous solutions and copy code which the problems requests at times. In the end I envisage I will have 20 files - one per chapter.
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Reviewed in the United States on February 23, 2025
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Gita Anjali
Battle Creek, US
★★★★★ 5
great for beginners
Format: Paperback
simple to understand, good examples
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Reviewed in the United States on May 3, 2026
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Atiyah Ellerbee
Lexington, US
★★★★★ 5
Great book!
Format: Paperback
Great book! I really like how the instructions are explained in the book and how it encourages you to both use the terminal / python interpreter and make files in vscode. This book can be used for intermediate python programmers and brand new programs. for the intermediate people, its a good refresher of the basics, and by the end you will definitely KNOW, KNOW them. I got this book in prep for new grad job applications, code assessments, game jams, and general practice. So I think you would do good to get this book at any level if you really want to get the basics down and know them!
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Reviewed in the United States on January 2, 2026
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Pete
Houston, US
★★★★★ 5
One of the best Python books
Format: Paperback
I bought 5 Python books as I needed to learn the language quickly for an upcoming project. Of all the books that I purchased, I found this one to be the best. It starts out with the basics and works its way through more complicated areas. Each chapter builds well upon the other. There is very little redundancy, and I was able to get through the book in about a week. I have a background in software development, so this book was able to show me how Python implements different concepts that I already knew, but I think a beginner would also be comfortable with the material.
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Reviewed in the United States on March 22, 2026

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