Holley Mid Mount Race Accessory System GM LS Engine 20-186BK – Black
This system from Holley is the black-finish LS Mid-Mount race system, part number 20-186BK. It includes an alternator and power steering pump; an A/C compressor is not included. Check the full description for included parts and fitment details.
See all accessory drives and pulleys. Ships for a flat $75 to any US state (shipping policy).
Compare related Mid-Mount systems: 20-185 natural-finish kit; 20-185BK black complete kit. Package contents differ; verify the required accessories before choosing.
Holley Mid-Mount Race Accessory System with Black Finish
LS Engine Drive includes Alternator, P/S Pump, Tensioner, Crank Damper, Belt and Pulleys.
- Pulley Kit
- 6 Rib Serpentine
- Cast Aluminum
- Black Finish
- GM LS (Gen III/IV)
- MPN: 20-186BK
Specifications
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Brand
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Holley
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Part Number
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20-186BK
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Water Pump Pulley Included
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Yes
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Water Pump Pulley Groves/Ribs
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Smooth
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Water Pump Pulley Diameter
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5.8 in
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Water Pump Pulley Material
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Steel
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Water Pump Pulley Color
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Black
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Water Pump Pulley Finish
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Paint
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Damper Included
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Yes (cast damper)
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Power Steering Pump Pulley Included
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Yes
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Power Steering Pump Pulley Groves/Ribs
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6 Rib
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Power Steering Pump Pulley Diameter
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6.7 in
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Power Steering Pump Pulley Material
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Steel
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Power Steering Pump Pulley Color
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Black
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Alternator Pulley Included
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Yes
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Alternator Pulley Groves/Ribs
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6 Rib
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Alternator Pulley Diameter
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59 mm
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Alternator Pulley Material
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Steel
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Alternator Pulley Color
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Black
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Alternator Pulley Nose Included
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No
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Air Conditioning Compressor Pulley Included
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No
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Water Pump Included
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Yes
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Water Pump Rotation
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Counter Clockwise
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Water Pump Material
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Aluminum
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Water Pump Color
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Black
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Water Pump Finish
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Powder Coat
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Power Steering Pump Included
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Yes
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Power Steering Pump Style
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GM Type 2
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Power Steering Pump Material
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Aluminum
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Power Steering Pump Color
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Natural
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Power Steering Pump Finish
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Natural
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Power Steering Pump Reservoir Included
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Yes
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Power Steering Pump Reservoir Style
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Attached
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Power Steering Pump Reservoir Material
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Plastic
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Power Steering Pump Reservoir Color
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Black
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Power Steering Pump Reservoir Finish
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Natural
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Air Conditioning Compressor Included
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No
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Alternator Included
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Yes
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Alternator Amps
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150 Amp
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Alternator Material
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Aluminum
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Alternator Color
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Black
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Alternator Bracket Included
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No
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Power Steering Pump Bracket Included
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No
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Power Steering Pump Hardline Included
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Yes
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Air Conditioning Compressor Bracket Included
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No
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Idler Included
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No
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Tensioner Included
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Yes
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Belt Included
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Yes
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Belt Type
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Serpentine
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Belt Quantity
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1
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Hardware Included
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Yes
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Thermostat Included
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Yes
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Water Neck Included
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Yes
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Quantity
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Kit
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Notes
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Damper Included
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Holley 20-186BK Mid-Mount Race reference
Holley identifies part 20-186BK as a Mid-Mount Race accessory drive system. Check accessory positions, belt routing and required additional parts using Holley’s 20-186BK product details and installation resources before ordering.
Compare accessory layouts with the Holley 20-185BK Mid-Mount Complete system, and confirm fitment for your engine and engine bay.
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