Holley's Mid-Mount accessory drive eliminates the traditional accessory bracket setup entirely. The "bracketless" design bolts accessories directly to the water pump for a clean, integrated look and superior engine bay visibility. The system includes a premium 150-amp alternator with 6-phase technology and a water pump, both sharing design efficiencies with the C7 Corvette.
Specifications:
- Accessory Drive Style: Mid-Mount
- Application: Chevrolet Big Block V8
- A/C Compressor: SD7, included
- Alternator: 150 Amp, included
- Finish: Black
- Material: Cast Aluminum
- Belt, Tensioner, Water Pump, Water Pump Pulley, Water Neck: Included
- Power Steering Pump, Reservoir, Hardline, Pulley: Included
- Product Type: Accessory Drive Kits
- Part Number: 20-242BK
Every accessory, pulley, and the belt are included, along with A/C line adapter, heater hose adapters, power steering hardline to -6AN adapter, and the alternator plug/harness. The power steering pump can also be used with Hydroboost brake systems; refer to the flow specs on part number 198-101.
FAQ
What's included in this kit?
Everything needed for a complete swap: water pump, SD7 A/C compressor, 150-amp alternator, power steering pump with baffled reservoir, all pulleys, belt, A/C line adapter, heater hose adapters, power steering hardline to -6AN adapter, and alternator plug/harness.
Does this use a bracket-based mounting design?
No, it uses a "bracketless" design where accessories bolt directly to the water pump for a clean, integrated form.
Can the power steering pump work with a Hydroboost brake system?
Yes, refer to the flow specs on Holley part number 198-101.
What finish options are available?
Natural and black finishes.
What engines does this fit?
Chevrolet big block V8 engines.

