Holley 20-185 Mid-Mount Complete Accessory System, LS Engine

#42520185

Holley 20-185 Mid-Mount Complete Accessory System, LS Engine

Name: Holley 20-185 Mid-Mount Complete Accessory System, LS Engine
Brand: Holley
SKU: 42520185
Price: 2399.95 USD
Availability: InStock
Rating: 5 (1 reviews)

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Features bracketless accessory mounting with ultra-easy assembly
This complete accessory system is specially designed of the LS engine
Comes with bottom outlet heater hose options for swap application clearance

$2,399.95

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Product Summary

Features bracketless accessory mounting with ultra-easy assembly
This complete accessory system is specially designed of the LS engine
Comes with bottom outlet heater hose options for swap application clearance
Has shortened top outlet nipple for more radiator hose turns and routing room
Will work with all common aftermarket and factory throttle bodies and intakes

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Key Specs

MFG. Part #	20-185
Brand	Holley

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Holley 20-185 Details

Holley's Mid-Mount complete accessory system makes use of a compact system for mounting accessories compared to other accessory drives. All accessories mount directly to the water pump, making a virtually bracketless system while giving the whole system a cleaner look. 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 hairpin/square wire, 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.

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.

Bracketless accessory mounting with ultra-easy assembly
Bottom outlet heater hose options for swap application clearance
LT1 style hairpin 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!
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.

Charts

Instructions (PDF)

Guides & Documents

Accessory Drive Kits Installation Instructions (42520185)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Holley 20-185 Specifications

KEY SPECS
MFG. Part #	20-185
Brand	Holley

GENERAL
GTIN Code	090127029473

Ratings & Reviews

1 Review

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Look No Further - This Is The Accessory Kit For You

5.0

4 years ago

KS80537

Loveland, CO

Our project is a 1980 Camaro / LS3 E-Rod swap. The 20-185 Holley kit is excellent. Great, tight-but-not-too-tight location of accessories. No clearance problems anywhere, with one minor exception; the vapor purge solenoid could no longer be mounted on the front of the engine where Chevy says to mount it. No biggie; it looks better mounted on the firewall anyway. We didn't have to use a remote power steering reservoir; we did have a custom high-pressure hose made locally to go between pump and steering gearbox. A steam port inlet on the back of the water pump enabled us to have super-clean, nearly-invisible routing of the steam tube from each head. The instructions are very high quality (and light years better than their carburetor rebuild instructions). Based on several phone calls (some for how-to, and one for a minor issue with the kit), Holley's customer service is the best I've dealt with. They ALWAYS answer my emails. I would use Holley for the quality of their customer service alone, though it had nothing to do with why I initially chose this kit.

Would Recommend

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Fitment

2004 Buick Rainier

GM LM4

2004-2005 Cadillac CTS

GM LS6

2006-2007 Cadillac CTS

GM LS2

2002-2011 Cadillac Escalade

GM LM7
GM LQ9

2012 Cadillac Escalade

6.2 Chevy LS V8

2013 Cadillac Escalade

GM L9H

2014 Cadillac Escalade

GM L94

2003-2006 Cadillac Escalade ESV

GM LM7
GM LQ9

2007-2012 Cadillac Escalade ESV

6.2 Chevy LS V8

2013 Cadillac Escalade ESV

GM L9H

2014 Cadillac Escalade ESV

GM L94

2002-2006 Cadillac Escalade EXT

GM LM7
GM LQ9

2007-2012 Cadillac Escalade EXT

6.2 Chevy LS V8

2013 Cadillac Escalade EXT

GM L9H

2007-2011 Chevy Avalanche

GM L76
GM LC9
GM LMG
GM LY5

2012-2013 Chevy Avalanche

GM LY5

2002-2006 Chevy Avalanche 1500

GM LM7

2000-2002 Chevy C1500

4.8 Chevy LS V8
GM LM7
GM LQ4

1998-2002 Chevy Camaro

GM LS1

2010-2014 Chevy Camaro

GM LS3

1997-2000 Chevy Corvette

GM LS1

2001-2004 Chevy Corvette

GM LS1
GM LS6

2005-2007 Chevy Corvette

GM LS2

2008-2013 Chevy Corvette

GM LS3

2006-2009 Chevy Impala

GM LS4

2006-2007 Chevy Monte Carlo

GM LS4

1999 Chevy Silverado 1500

4.8 Chevy LS V8
GM LM7

2000-2011 Chevy Silverado 1500

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2012-2014 Chevy Silverado 1500

4.8 Chevy LS V8
GM LM7

2007 Chevy Silverado 1500 Classic

GM LQ4

2001-2003 Chevy Silverado 1500 HD

GM LQ4

2005-2006 Chevy Silverado 1500 HD

GM LQ4

2007 Chevy Silverado 1500 HD

GM LQ9

2007 Chevy Silverado 1500 HD Classic

GM LQ4

2000-2004 Chevy Silverado 2500

GM LM7
GM LQ4

2005 Chevy Silverado 2500

GM LQ9

2001-2011 Chevy Silverado 2500 HD

GM LQ4

2007 Chevy Silverado 2500 HD Classic

GM LQ4

2001-2006 Chevy Silverado 3500

GM LQ4

2007 Chevy Silverado 3500 Classic

GM LQ4

2007-2011 Chevy Silverado 3500 HD

GM LQ4

2014-2017 Chevy SS

GM LS3

2003-2004 Chevy SSR

GM LM4

2005-2006 Chevy SSR

GM L77

2014 Chevy Suburban

GM LMG
GM LY5

2000-2001 Chevy Suburban 1500

GM LM7

2002-2006 Chevy Suburban 1500

GM L59
GM LM7

2007-2009 Chevy Suburban 1500

GM LC9
GM LMG
GM LY5

2010-2011 Chevy Suburban 1500

GM LC9
GM LMG

2012-2014 Chevy Suburban 1500

GM LMG
GM LY5

2000-2006 Chevy Suburban 2500

GM LQ4

2007-2011 Chevy Suburban 2500

GM L96

2012-2013 Chevy Suburban 2500

GM LMG
GM LY5

2000-2006 Chevy Tahoe

4.8 Chevy LS V8
GM L59
GM LM7

2007 Chevy Tahoe

4.8 Chevy LS V8
GM LMG
GM LY5

2008 Chevy Tahoe

6.2 Chevy LS V8
GM L9H
GM LC9
GM LMG

2009 Chevy Tahoe

GM L9H
GM LC9
GM LMG

2010-2011 Chevy Tahoe

GM LC9
GM LMG

2012-2014 Chevy Tahoe

GM LMG
GM LY5

2002-2005 Chevy Trailblazer

GM LH6

2006-2009 Chevy Trailblazer

GM LS2

2002-2009 GMC Envoy

GM LM4

2002-2006 GMC Envoy XL

GM LM4

2004-2005 GMC Envoy XUV

GM LM4

2001-2005 GMC Savana 1500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM L94
GM LM7
GM LQ4

2007-2014 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

2001-2005 GMC Savana 2500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 2500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

2002-2005 GMC Savana 3500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 3500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

1999-2011 GMC Sierra 1500

GM L20
GM L9H
GM LC9
GM LMG

2007 GMC Sierra 1500 Classic

GM L33
GM L59
GM LM7

2001-2003 GMC Sierra 1500 HD

GM LQ4

2005-2006 GMC Sierra 1500 HD

GM LQ4

2007 GMC Sierra 1500 HD Classic

GM LQ4

1999-2001 GMC Sierra 2500

GM LM7
GM LQ4

2002-2004 GMC Sierra 2500

GM LQ4

2001-2011 GMC Sierra 2500 HD

GM LQ4

2015-2019 GMC Sierra 2500 HD

GM L96

2007 GMC Sierra 2500 HD Classic

GM LQ4

2001-2006 GMC Sierra 3500

GM LQ4

2007 GMC Sierra 3500

GM L96

2007 GMC Sierra 3500 Classic

GM LQ4

2007-2011 GMC Sierra 3500 HD

GM L96

2015-2019 GMC Sierra 3500 HD

GM L96

2001 GMC Sierra C3

GM LQ4

2000-2007 GMC Yukon

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2008-2011 GMC Yukon

4.8 Chevy LS V8
GM L20
GM L94
GM LM7
GM LY2

2012-2013 GMC Yukon

GM L94
GM LC9
GM LMG

2000 GMC Yukon XL 1500

GM LM7

2001-2011 GMC Yukon XL 1500

GM L59
GM LM7
GM LQ4

2012-2014 GMC Yukon XL 1500

GM L96

2000-2011 GMC Yukon XL 2500

GM LQ4

2012-2013 GMC Yukon XL 2500

GM L96

2003-2007 Hummer H2

GM LQ4

2008-2009 Hummer H2

6.2 Chevy LS V8

2008-2009 Hummer H3

GM LH8

2010 Hummer H3

GM LH9

2009 Hummer H3T

GM LH8

2010 Hummer H3T

GM LH9

1998-2002 Pontiac Firebird

GM LS1

2009 Pontiac G8

GM LS3

2004 Pontiac GTO

GM LS1

2005-2006 Pontiac GTO

GM LS2