Holley 20-290BK Black Mid-Mount Complete Accessory Drive System

Name: Holley 20-290BK Black Mid-Mount Complete Accessory Drive System
Brand: Holley
SKU: HOL-20290BK
Price: 3449.95 USD
Availability: InStock
Rating: 4.7 (7 reviews)

Manufacturer

Part Number

20-290BK

7 reviews

Sale Price

$3,449.95

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Product Details

The Holley 20-290BK Black Mid-Mount Complete Accessory System is an innovative all-in-one solution that integrates the timing cover directly into the bracket casting, eliminating traditional accessory brackets for simplified installation and a clean engine bay appearance. Designed for small block Chevy engines, this comprehensive kit includes everything needed to drive all essential accessories with OE pulley ratios for optimal performance.

Complete System Includes:

Premium 150-Amp Alternator: Holley high-output alternator with easy wiring that doesn't require factory ECU excitation
SD7 A/C Compressor: Compact design for maximum clearance in tight engine compartments
Type II Power Steering Pump: Features baffled reservoir for consistent performance
Holley Water Pump: Cartridge design allows easy servicing without removing the housing or timing cover
OE Style Harmonic Damper: Cast-in serpentine pulley for reliable operation

Installation-Friendly Features:

No adapters or spacers required for straightforward bolt-on installation
Swivel water inlet and outlet connections enable custom radiator hose routing
Configurable heater hose connection options provide routing flexibility
Compatible with common aftermarket and factory throttle bodies and intake manifolds
All necessary plumbing adapters, wiring adapters, gaskets, and seals included

The bracketless mounting system represents a breakthrough in accessory drive design, with the timing cover serving as the structural foundation. This reduces complexity, weight, and installation time while maintaining precise alignment of all accessories. The black finish provides a professional appearance that complements modern engine builds.

Products specifications

A/C Compressor Included

Yes

A/C Compressor Type

SD7

Accessory Drive Style

Mid-Mount

Alternator Amperage

150

Alternator Included

Yes

Application

Gen III Hemi

Belt Included

Yes

Brand

Holley

Choose Your Part

Accessory Drive Kits

Damper Included

Yes

Damper Style

Cast Damper

Emission Code

Engine

Gen III Hemi - Non VVT

Finish

Black

Inlet Size

1.75

Material

Cast Aluminum

Outlet Size

1.75

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

Tensioner Included

Yes

Thermostat Included

Yes

Warning

California Proposition 65

Warranty

Manufacturer's Limited 90 Day Warranty

Water Neck Included

Yes

Water Pump Included

Yes

Water Pump Pulley Included

Yes

Great

Gil C

Great service and easy checkout

Richard S

Great experience

Andy T

Good

Devin S

They stayed in contact all the way through and passed the delivery date.

Anthony L

Easy too use format straight forward

Andrew H