Holley Complete Mid Mount Accessory System Black GM Chevrolet Small Block



  • Increase Engine Bay Space
  • Bracketless System Design
  • All Accessories Included
  • Easy System Assembly
MSRP $2,167.00
You save 10%

Holley Black Complete Mid Mount Accessory System for GM Chevrolet Small Block engines.

The Mid Mount Accessory Drive System from Holley (20240BK) efficiently relocates your accessories using a bracketless mounting system. This pulls everything closer together to improve engine bay space and show off your small block Chevrolet better. This system includes highly modernized accessories in addition, so your Small Block's auxillary functions will gain a huge upgrade. Gain a more efficient water pump, improved A/C and P/S, plus an alternator with technology as seen in the C7 Corvette.

Features and Benefits:
- Compact Accessory Mounting
- Modern Accessory Components
- Complete System
- Easy Assembly With Instructions
- Includes Hardware

This 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. Also integrated are the compact and reliable SD7 A/C compressor and Type II P/S pump with baffled reservoir.

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 Holley says “complete,” they mean it. 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.

This Kit Includes:
- Holley LT1 Style water pump
- Hidden thermostat bypass and heater hose ports with NPT line adapters included
- Compact SD7 A/C compressor with line adapter included
- Saginaw Type II power steering pump with baffled reservoir
- Six Phase Alternator
- P/S adapter hardline to AN -6 adapter included
- OE pulley ratios for optimal accessory performance
- Billet alternator, tensioner, and compressor pulley covers
- Black finish
- All necessary hardware and harnesses

California Residents: Proposition 65 Warning

Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:

  • 1965 and older U.S. manufactured California certified vehicles
  • 1967 and older U.S. manufactured federally certified vehicles

Vehicle Fitment

This product will fit the following C10 years:

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