PPE Head Stud Kit

1994–1998 Dodge Ram 5.9L Diesel

Part #: 218034200

Overview

The PPE Head Stud Kit is a precision-engineered upgrade designed specifically for the Dodge Cummins 5.9L 12-valve diesel engines from 1989 to 1998, with fitment confirmed for 1994–1998 Dodge Ram models. This kit is built to meet the demands of diesel enthusiasts and professional engine builders who require enhanced clamping force and durability to handle high-performance and boosted applications. Whether you are pushing your engine for heavy towing, off-road adventures, or competitive racing, these head studs provide the strength and reliability needed to maintain cylinder head integrity under extreme combustion pressures.

Manufactured to exceed industry standards, the PPE Head Stud Kit ensures superior performance compared to many OEM and aftermarket options. It is highly recommended for engines running boost levels of 45 psi and above, delivering peace of mind by preventing head gasket failures and cylinder head warping during intense operating conditions.

Key Features

Every component in the PPE Head Stud Kit is crafted for maximum strength, precision, and longevity. Key features include:

• Precision centerless ground studs for exact fit and alignment
• Threads rolled to Mil-S-8879 specifications to increase tensile strength and reduce stress concentration
• Independently tested tensile strength exceeding 231,900 psi, outperforming many leading manufacturers
• Complete kit includes hardened parallel washers, nuts, and specially formulated assembly grease for uniform load distribution and accurate torque application
• Stud lengths tailored for specific head bolt locations: short, medium, and long studs included
• Flange bolts and nuts designed for secure fastening with 12-point sockets for ease of installation
• Recommended for high-boost diesel engines, ensuring durability under extreme conditions

Construction & Design

The PPE Head Stud Kit is manufactured from premium-grade alloy steel selected for its exceptional tensile strength and fatigue resistance. Each stud undergoes a centerless grinding process to achieve precise diameter and surface finish, ensuring consistent clamping force and perfect fitment. The thread rolling process enhances mechanical properties by aligning the grain structure, which increases strength while minimizing thread failure risk.

Included hardened washers and nuts are engineered to evenly distribute load across the cylinder head surface, preventing warping and maintaining a reliable seal. The specially formulated assembly grease reduces friction during installation, allowing for precise torque application and preventing galling or thread damage.

Installation & Fitment

This head stud kit is a direct-fit replacement for Dodge Cummins 5.9L 12-valve engines from 1989 through 1998, with confirmed fitment on 1994–1998 Dodge Ram 5.9L diesel trucks. Installation requires removal of the cylinder head and replacement of the factory head bolts with the supplied studs, nuts, washers, and flange bolts. The included assembly grease should be applied to threads to ensure accurate torque readings and prevent seizing. No modifications to the engine block or cylinder head are necessary, making this an ideal upgrade for engine rebuilds and performance enhancements.

What's Included

• 6 x 96mm length studs (M12-1.25 & M12-1.75 thread pitches)
• 14 x 146mm length studs (M12-1.25 & M12-1.75 thread pitches)
• 6 x 200mm length studs (M12-1.25 & M12-1.75 thread pitches)
• 6 x M8-1.25 x 75mm flange bolts (15mm outer diameter)
• 26 x M12-1.25 flange nuts (21mm outer diameter)
• 26 x M12 flat washers (22mm outer diameter)
• 1 x Pack of specially formulated assembly grease for thread lubrication

Ideal For

The PPE Head Stud Kit is ideal for diesel performance enthusiasts, professional engine builders, and anyone upgrading their Dodge Cummins 5.9L 12-valve engine for higher boost levels or enhanced reliability. It is especially suited for applications involving heavy towing, off-road use, and competitive drag racing or truck pulling where engine durability and head gasket integrity are critical to sustained performance.

Pacific Performance Engineering (PPE) develops heavy-duty and performance upgrades for trucks and diesel platforms, including differential covers, transmission pans, oiling and cooling components, and other durability-minded parts. PPE products are built to handle heat, load, and power—ideal for tow rigs and performance builds that need stronger hardware and better fluid control.