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Instruction Sheets for Part Number HLY-20-186
Holley Mid-Mount Complete Accessory Systems
Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Counterclockwise, Power Steering, GM 2, Natural Color, Chevy, 4.8-7.0L, Kit
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Estimated Ship Date from OH, TX: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
20-186
Part Type:
Product Line:
Summit Racing Part Number:
HLY-20-186
UPC:
090127053522
Pulley Style:
Serpentine
Crankshaft Pulley Included:
Yes
Crankshaft Pulley Material:
Steel
Crankshaft Pulley Color:
Black
Crankshaft Pulley Bolt Hole Quantity:
One
Crankshaft Pulley Grooves:
6-groove, serpentine
Water Pump Material:
Cast aluminum
Water Pump Color:
Natural
Water Pump Rotation:
Counterclockwise
Water Pump Pulley Included:
Yes
Water Pump Pulley Material:
Steel
Water Pump Pulley Color:
Black
Water Pump Pulley Grooves:
Non-ribbed
Power Steering Pump Style:
GM Type 2
Power Steering Pump Color:
Natural
Power Steering Pump Reservoir Included:
Yes
Power Steering Pump Reservoir Style:
Attached
Power Steering Pump Reservoir Material:
Plastic
Power Steering Pump Reservoir Color:
Black
Power Steering Pulley Included:
Yes
Power Steering Pulley Material:
Steel
Power Steering Pulley Color:
Black
Power Steering Pulley Attachment:
Press fit
Power Steering Pulley Grooves:
6-groove, serpentine
Power Steering Brackets Included:
No
Alternator Material:
Cast aluminum
Alternator Color:
Natural
Alternator Amperage:
150
Alternator Style:
1-wire
Alternator Pulley Included:
Yes
Alternator Pulley Material:
Steel
Alternator Pulley Color:
Black
Alternator Pulley Grooves:
6-groove, serpentine
Alternator Fan Included:
No
Alternator Brackets Included:
No
Air Conditioning Pulley Included:
No
Air Conditioning Bracket Included:
No
Idler Included:
Yes
Idler Pulley Color:
Black
Idler Brackets Included:
No
Tensioner Included:
Yes
Tensioner Style:
Spring-loaded
Tensioner Pulley Color:
Black
Tensioner Cover Included:
No
Hardware Included:
Yes
Belt Included:
Yes
Coating Type:
Painted
Quantity:
Sold as a kit.
Holley Mid-Mount Complete Accessory Systems
Holley Mid-Mount complete accessory systems achieve what no other accessory bracket systems do--eliminate the brackets! This pulls in all the accessories tighter than other accessory drives by bolting directly to other components for a clean, integrated form. They offer superb engine visibility to show off your horsepower, not your accessories. Holley Mid-Mount complete accessory systems are available in several versions and finishes to match your application. Order the kit designed to fit your engine.
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