Holley Black Mid-Mount Complete Accessory System

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

20-290BK

Overview:

The Holley Black Mid-Mount Complete Accessory System is a fully integrated, high-quality accessory drive solution designed to fit a wide range of Dodge and Jeep models from 1966 through 2006. Engineered for enthusiasts and professional builders alike, this system consolidates all essential engine accessories into a compact, bracketless design that bolts directly to the timing cover. This innovative approach not only tightens the accessory package for a cleaner engine bay but also enhances engine visibility, allowing you to showcase your powertrain without clutter.

Perfect for naturally aspirated Gen III Hemi engines including 5.7L, 6.1L, and 6.4L variants, this complete kit simplifies swaps and upgrades by including everything needed for installation. Whether restoring a classic Dodge Charger or upgrading a Jeep Wrangler, the Holley mid-mount system delivers reliable performance, modern technology, and a sleek black finish that complements any engine build.

Key Features:

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

• Bracketless Accessory Mounting System: Accessories bolt directly to the timing cover, eliminating bulky brackets for a clean, integrated look.
• Configurable Heater Hose Connections: Two optional heater connection configurations provide flexible hose routing options.
• Holley Premium 150 Amp Alternator: Incorporates 6-phase and square wire technology for reliable, high-output electrical power without requiring factory ECU excitation.
• Compact SD7 A/C Compressor: Small footprint compressor designed for efficient air conditioning performance.
• Type II Power Steering Pump with Baffled Reservoir: Provides proper pressure for older steering boxes, preventing damage from excessive pressure.
• Holley Cartridge Style Water Pump: Compact and service-friendly design allows maintenance without removing the timing cover.
• OE Pulley Ratios: Ensures optimal accessory performance with no adapters or spacers required.
• Swivel Water Inlet & Outlet: Allows custom radiator hose routing for versatile installation.
• Complete Kit: Includes all accessories, pulleys, belts, plumbing adapters, wiring harnesses, gaskets, and seals for a true bolt-on experience.

Construction & Design:

The Holley mid-mount system is crafted from durable cast aluminum with a sleek black finish that resists corrosion and complements engine aesthetics. The bracketless design integrates the timing cover as part of the accessory mounting system, reducing complexity and weight. Each component is engineered for longevity and ease of service, such as the cartridge-style water pump that allows quick maintenance without disassembly of the entire system. The compact layout minimizes engine bay intrusion, improving clearance for hood and frame rails, a common challenge with traditional accessory drives.

Installation & Fitment:

Installation is straightforward thanks to Holley’s attention to detail and comprehensive hardware kit. The system is designed to fit a broad range of Dodge and Jeep vehicles equipped with non-VVT Gen III Hemi engines from 1966 to 2006, including popular models like the Dodge Challenger (1970–1974), Charger (1966–1978), Dakota (1987–2004), Magnum (1978), Ramcharger (1974–1993), and Jeep Wrangler (1987–2006). Color graphical instructions guide you through each step, ensuring a smooth assembly process without the need for adapters or modifications. The kit’s compatibility with common aftermarket and factory throttle bodies and intakes further simplifies integration into your build.

What's Included:

• Holley Black Mid-Mount Timing Cover / Bracket Assembly
• Holley Premium 150 Amp Alternator with Wiring Harness
• SD7 Compact A/C Compressor
• Type II Power Steering Pump with Baffled Reservoir
• Holley Cartridge Style Water Pump
• OE Style Crank Damper with Cast-in Serpentine Pulley
• All Pulleys and Serpentine Belt
• Heater Hose Adapters
• Power Steering to -6 AN Hardline Adapter
• All Necessary Gaskets, Seals, and Mounting Hardware

Ideal For:

This complete accessory system is ideal for automotive enthusiasts, restorers, and performance builders seeking a clean, reliable, and modern accessory drive solution for classic and late-model Dodge and Jeep vehicles. It is especially suited for those performing engine swaps or upgrades on Gen III Hemi engines who want to improve engine bay aesthetics, simplify installation, and ensure dependable accessory operation without sacrificing space or clearance.

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.