Holley Billet Aluminum Mounting Plate for Power Steering Pump

Gen III Hemi Engine Swaps in Muscle Cars & Trucks

97-379

Overview:

The Holley Billet Aluminum Mounting Plate is engineered specifically for Gen III Hemi engine swaps in classic muscle cars and trucks. When installing a late-model Mopar Gen III Hemi engine, the factory power steering pump often produces excessive pressure that can damage the steering box on older vehicles. This mounting plate allows you to install a low-pressure Saginaw type II power steering pump, ensuring compatibility with factory low-pressure steering boxes commonly found in vintage muscle cars and trucks.

Designed to work seamlessly with the Holley power steering pump (part #198-104) and pulley (part #97-383), this mounting plate maintains proper pump speed and pressure using the existing Gen III Hemi accessory drive system. It’s an essential upgrade for enthusiasts looking to preserve the integrity of their classic steering components while enjoying modern engine performance.

Key Features:

This mounting plate offers a reliable and durable solution for power steering pump installation on Gen III Hemi engines, featuring:

• Precision billet aluminum construction with a sleek black anodized finish for corrosion resistance and long-lasting durability
• Mounts the low-pressure Holley power steering pump (198-104) on the left side cylinder head of Gen III Hemi engines using existing tapped holes
• Compatible with factory low-pressure steering boxes found in older muscle cars and trucks to prevent damage caused by excessive pump pressure
• Works with pulley 97-383 to ensure the power steering pump operates at the correct speed within the Gen III Hemi accessory drive system
• Complete kit option (part # VK090244) available including pump, reservoir, mounting plate, hardline adapter, and pulley for a comprehensive installation
• Ideal for "car style" accessory drive systems commonly used in muscle car and truck engine swaps
• Simple bolt-on installation using existing cylinder head mounting points

Construction & Design:

The mounting plate is crafted from high-quality billet aluminum, providing superior strength and rigidity compared to stamped or cast alternatives. Its black anodized finish not only enhances corrosion resistance but also adds a professional, clean appearance under the hood. The design precisely matches the Gen III Hemi cylinder head’s tapped holes, ensuring a secure and vibration-resistant fit. This attention to detail guarantees reliable pump alignment and longevity, even under demanding driving conditions.

Installation & Fitment:

Installation is straightforward for experienced mechanics and enthusiasts performing Gen III Hemi engine swaps. The mounting plate bolts directly to the left side cylinder head using existing tapped holes, eliminating the need for drilling or modifications. It is designed to be used with the Holley low-pressure power steering pump (198-104) and pulley (97-383), which operate at the correct speed and pressure for older muscle car and truck steering boxes. This setup prevents premature wear or failure of vintage steering components caused by the higher pressure of the factory Gen III Hemi pump.

What’s Included

• Billet aluminum mounting plate with black anodized finish

Note: The mounting plate (part #97-379) is sold separately. A complete power steering kit (part # VK090244) is also available and includes the pump, reservoir, mounting plate, hardline adapter, and pulley for a full installation solution.

Ideal For:

This mounting plate is perfect for muscle car and truck enthusiasts performing Gen III Hemi engine swaps who want to maintain the integrity of their original low-pressure steering boxes. It is especially suited for those using "car style" accessory drive systems and seeking a reliable, bolt-on solution to prevent steering box damage caused by excessive pump pressure. Whether restoring a classic Mopar or building a high-performance street machine, this mounting plate ensures proper power steering function and longevity.

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.