Holley Big Block Chevy Mid-Mount Complete Accessory System - Natural Finish - 20-242
Holley's Mid-Mount accessory drives are now available for your big block Chevrolet engines! The revolutionary system does what no other accessory bracket system has done… GETS RID OF THE BRACKETS! The 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, 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. 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 water pump design incorporates optional side or top heater ports. The top thermostat bypass and heater ports are recessed into the manifold. So if you don't need them, you don't see them! 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, and P/S pump with reservoir. All pulleys and the belt are supplied. Even A/C line adapter, 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. Patent - www.holley.com/patents/
Features:
The Mid-Mount complete accessory system has all accessories pulled in tighter than other accessory drives.
Bracketless accessory mounting with ultra-easy assembly
O-ring seal to engine
Hidden thermostat bypass and heater hose ports with NPT line adapters included
LT1 style premium alternator
LT1 style water pump design
Compact SD7 A/C compressor with line adapter included
Type II power steering pump with baffled reservoir
P/S adapter hardline to AN -6 adapter included
OE pulley ratios for optimal accessory performance
Available in natural and black finishes
Billet alternator, tensioner, and compressor pulley covers
A/C Compressor Included
Yes
A/C Compressor Type
SD7
Accessory Drive Style
Mid-Mount
Alternator Amperage
150
Alternator Included
Yes
Application
Chevrolet Big Block
Belt Included
Yes
Brand
Holley
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Accessory Drives
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Accessory Drive Kits
Clearance Category
Accessory Drives
Damper Included
No
Damper Style
Factory
Emission Code
5
Engine
Chevy Big Block V8
Finish
Cast
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
Sale Category
Engine
Tensioner Included
Yes
Thermostat Included
No
Warranty
Limited 90 Day
Water Neck Included
Yes
Water Pump Included
Yes
Water Pump Pulley Included
Yes
UPC
090127072806
Part Number
20-242
Emissions
5
This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Tech Resources
Instructions - 199r11820.pdf
The power steering pump included can be used Hydroboost systems. Please refer to the flow specs on part number 198-101