Holley Mid-Mount Complete Accessory System

1966–2006 Dodge Challenger, Charger, Dakota, Magnum, Ramcharger & Jeep Wrangler

20-291BK

Overview:

The Holley Black Mid-Mount Complete Accessory System is a fully integrated accessory drive solution designed to fit a wide range of Dodge and Jeep models from 1966 through 2006. This system is engineered to pull all engine accessories in tighter than traditional setups, providing a clean, compact appearance that enhances engine visibility and showcases your powertrain rather than bulky components. Featuring a patent-pending bracketless design, the accessories mount directly to the timing cover, simplifying installation and creating a sleek, factory-style look.

Ideal for enthusiasts upgrading or restoring classic Dodge and Jeep vehicles, this complete kit delivers modern reliability and performance while maintaining a period-correct aesthetic. It supports multiple heater hose configurations for flexible routing and includes premium components such as a Holley 150 amp alternator, SD7 A/C compressor, and a Type II power steering pump with a baffled reservoir designed to protect older steering boxes.

Key Features:

This accessory system combines innovative engineering with practical features to ensure optimal performance and ease of use:

• Bracketless accessory mounting system integrates directly with the timing cover for ultra-easy assembly and a clean look
• Configurable heater hose connections provide flexible routing options to fit various vehicle setups
• Holley premium 150 amp alternator with 6-phase and square wire technology delivers ample power for all electrical systems
• Alternator wiring is simplified and does not require factory ECU excitation
• Compact alternator placement eliminates frame rail or hood clearance issues common with factory drives
• Holley cartridge-style water pump offers compact size and easy servicing without removing the timing cover
• SD7 compact A/C compressor designed for efficient cooling in tight engine bays
• Type II power steering pump with baffled reservoir provides correct pressure to protect older steering boxes from damage
• Swivel water inlet and outlet fittings allow custom radiator hose routing
• OE pulley ratios ensure optimal accessory performance without adapters or spacers
• Compatible with common aftermarket and factory throttle bodies and intake manifolds
• Available in natural cast aluminum or sleek black finish to match engine bay aesthetics

Construction & Design:

The Holley Mid-Mount Accessory System is crafted from high-quality cast aluminum components for durability and corrosion resistance. The bracketless design reduces complexity by integrating the accessory mounts directly into the timing cover casting, resulting in fewer parts and a more rigid assembly. This approach not only improves engine bay appearance but also enhances reliability by minimizing potential points of failure.

Each accessory is engineered to meet or exceed OEM specifications, ensuring long-lasting performance. The water pump features a cartridge-style design for straightforward maintenance, while the power steering pump’s baffled reservoir prevents fluid aeration and maintains consistent pressure, protecting vintage steering systems.

Installation & Fitment:

Designed for straightforward installation, this complete kit includes all necessary components, adapters, and detailed color graphical instructions to guide you through each step. The system fits a broad range of Dodge and Jeep models, including:

• Dodge Challenger (1970–1974)
• Dodge Charger (1966–1978)
• Dodge Dakota (1987–2004)
• Dodge Magnum (1978)
• Dodge Ramcharger (1974–1993)
• Jeep Wrangler (1987–2006)

No modifications or adapters are required for installation, and the system works with both naturally aspirated Gen III Hemi engines (5.7L, 6.1L, and 6.4L) as well as VVT and non-VVT variants within the specified years.

What's Included:

• Holley cartridge-style water pump
• SD7 compact A/C compressor
• Holley premium 150 amp alternator with wiring harness and plug
• Type II power steering pump with baffled reservoir
• OE style crank damper with cast-in serpentine pulley
• All pulleys and serpentine belt
• Heater hose adapters for multiple routing options
• Power steering to -6 AN hardline adapter
• Gaskets, seals, and all necessary hardware
• Color graphical installation instructions

Ideal For:

This accessory system is perfect for classic Dodge and Jeep owners seeking a reliable, modern upgrade that maintains a clean, factory-style engine bay appearance. It suits restorers, performance enthusiasts, and anyone looking to simplify accessory drive installation while improving engine accessibility and aesthetics. The system’s compact design and comprehensive component inclusion make it an excellent choice for engine swaps, rebuilds, or performance upgrades on vintage vehicles equipped with Gen III Hemi engines.

Holley is a cornerstone name in performance, spanning everything from classic carburetion to modern EFI, fuel systems, and race-ready supporting components. It’s also home to a roster of iconic sub-brands across ignition, exhaust, and drivetrain—making Holley a one-stop ecosystem for builders chasing better drivability, more power, and proven track heritage.