Specification
Brand
Holley
Item Number
20-220BK
Part Name
Premium Mid-Mount Acc System GM LT1/LT4 Gen-5
Accessory Drive Style
Mid-Mount
Application
GM Gen V LT4
Finish
Black
Material
Cast Aluminum
Oil System Type
Wet Sump
Pulley Style
Serpentine
A/C Compressor Included
Yes
A/C Compressor Type
SD7
Alternator Included
Yes
Alternator Amperage
150
Belt Included
Yes
Power Steering Pump Included
Yes
Power Steering Pump Type
Type II
Water Pump Included
Yes
Water Pump Design
LT4 Style
Tensioner Included
Yes
Thermostat Included
Yes
Water Neck Included
Yes
Power Steering Hardline Included
Yes
Power Steering Pulley Included
Yes
Power Steering Reservoir Included
No
Alternator Pulley Included
Yes
Alternator Pulley Material
Steel
Alternator Pulley Finish
Black Painted
Alternator Pulley Grooves
6-Groove, Serpentine
Alternator Bracket Included
Yes
Alternator Bracket Material
Cast Aluminum
Alternator Bracket Finish
Black
A/C Pulley Included
Yes
A/C Pulley Material
Steel
A/C Pulley Finish
Black Painted
A/C Pulley Grooves
6-Groove, Serpentine
A/C Bracket Included
Yes
A/C Bracket Material
Cast Aluminum
A/C Bracket Finish
Black
Power Steering Pulley Material
Steel
Power Steering Pulley Finish
Black Painted
Power Steering Pulley Grooves
6-Rib, Serpentine
Power Steering Pump Bracket Included
Yes
Power Steering Pump Bracket Material
Aluminum
Power Steering Pump Bracket Finish
Black Painted
Water Pump Pulley Included
Yes
Water Pump Pulley Material
Steel
Water Pump Pulley Finish
Black Painted
Water Pump Pulley Grooves
Non-Ribbed
Crankshaft Pulley Included
No
Idler Included
Yes
Idler Brackets Included
Yes
Tensioner Style
Hydraulic
Tensioner Cover Included
No
Hardware Included
Yes
UPC
090127056486
Description
Holley's Premium Mid-Mount Accessory Drive System for GM Gen V LT4 wet sump engines features a bracketless design that mounts accessories directly to the water pump, providing a clean and compact installation. This complete system includes a 150-amp alternator, SD7 A/C compressor, Type II power steering pump, and all necessary pulleys and belts, all finished in black. Designed for optimal performance and easy installation, it offers improved clearance for swap applications and maintains OE pulley ratios.
Disclaimer
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.