Holley Replacement Hardware Kit

Gen III Hemi Hi-Ram Manifolds

300-655

Overview:

The Holley Replacement Hardware Kit is specifically designed for Gen III Hemi Hi-Ram intake manifolds, providing a reliable and convenient solution for maintaining or restoring your manifold assembly. This kit is ideal for enthusiasts and professionals who need genuine Holley quality parts to ensure proper fitment and secure installation. Whether you are performing routine maintenance or rebuilding your intake system, this hardware kit offers the essential components to keep your Gen III Hemi Hi-Ram manifold functioning at its best.

Compatible with Holley part numbers 300-650, 300-651, 300-653, and 300-658, this kit delivers peace of mind by using factory-grade materials and specifications. It is an excellent choice for anyone looking to replace worn or missing hardware without compromising the integrity of their high-performance intake setup.

Key Features:

This replacement hardware kit includes all necessary fasteners and components engineered to meet Holley’s stringent quality standards. Key features include:

• Genuine Holley quality hardware designed for Gen III Hemi Hi-Ram manifolds
• Complete set of bolts, nuts, and washers for secure manifold installation
• Precision-engineered to match original factory specifications
• Durable materials resistant to corrosion and wear
• Compatible with multiple Holley Gen III Hemi Hi-Ram manifold part numbers
• Ensures proper sealing and alignment of intake manifold components
• Facilitates hassle-free maintenance and rebuilds

Construction & Design:

Holley’s replacement hardware kit is crafted from high-quality metals selected for strength and longevity. Each piece is manufactured to exacting tolerances to guarantee a precise fit with the Gen III Hemi Hi-Ram manifold components. The hardware is treated to resist corrosion and withstand the demanding conditions of high-performance engine environments. This attention to detail ensures that your intake manifold assembly remains secure and leak-free, contributing to optimal engine performance and reliability.

Installation & Fitment:

Installation of the Holley Replacement Hardware Kit is straightforward for anyone familiar with intake manifold assembly. The kit includes all necessary fasteners to replace original hardware on Gen III Hemi Hi-Ram manifolds associated with Holley part numbers 300-650, 300-651, 300-653, and 300-658. No modifications are required, and the hardware is designed to fit perfectly, ensuring a secure and proper installation. This kit is ideal for restoring your manifold to factory condition or upgrading worn components during engine rebuilds.

What's Included:

• Complete set of bolts, nuts, and washers for Gen III Hemi Hi-Ram manifold installation
• Hardware components matched to Holley’s original specifications
• Packaging designed to keep all parts organized and protected until installation

Ideal For:

This hardware kit is perfect for automotive enthusiasts, professional mechanics, and performance builders working on Gen III Hemi engines equipped with Holley Hi-Ram manifolds. It is especially useful for those performing maintenance, repairs, or upgrades who require genuine replacement hardware to maintain the integrity and performance of their intake system. Whether restoring a street machine or preparing a race engine, this kit ensures your manifold hardware is up to the task.

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.