PPE Exhaust Manifold Stud, Nut and Washer Kit: 1998.5-2018 5.9L/6.7L Cummins

PPE Exhaust Manifold Stud, Nut and Washer Kit

1994–2018 Cummins 5.9L/6.7L Diesel Engines

216110200

Overview:

The PPE Exhaust Manifold Stud, Nut and Washer Kit is a premium replacement solution designed specifically for Cummins 5.9L and 6.7L diesel engines from 1994 through 2018. Over time, factory exhaust manifold bolts can succumb to heat-induced fatigue, stretching, and corrosion, leading to exhaust leaks that compromise engine performance and reliability. This kit provides high-quality studs, nuts, and washers engineered to restore and enhance the integrity of your exhaust manifold connection.

Ideal for owners looking to maintain or upgrade their Cummins diesel engines, this kit ensures a secure, leak-free seal that withstands the rigors of repeated thermal cycling and heavy-duty use.

Key Features:

Engineered for durability and precision, the PPE Exhaust Manifold Stud, Nut and Washer Kit offers the following benefits:

• Centerless ground and rolled studs for superior strength and reduced stress concentrations
• Use of studs and nuts allows for accurate torque application and even load distribution
• Includes 12-point flange nuts for enhanced fastening security
• Black oxide finish on all fasteners for corrosion resistance and long-lasting appearance
• Designed to prevent exhaust leaks caused by stretched or fatigued factory bolts
• Compatible with aftermarket exhaust manifolds on 1994–1998 5.9L 12-valve Cummins engines
• Fits 1998.5–2002 5.9L 24-valve, 2003–2007 5.9L 24-valve (requires factory heat shield removal), and 2007.5–2018 6.7L 24-valve Cummins engines

Construction & Design:

Each stud in this kit is precision-engineered through centerless grinding and rolling processes that enhance material strength and reduce stress risers. This manufacturing method results in studs that are more resistant to fatigue and stretching compared to standard factory bolts. The black oxide coating provides a protective barrier against rust and corrosion, extending the service life of the fasteners in harsh under-hood environments.

The inclusion of 12-point flange nuts improves the fastening interface, allowing for better torque control and a more uniform clamping force across the exhaust manifold flange. This design minimizes the risk of leaks and ensures a reliable seal under extreme thermal conditions.

Installation & Fitment:

Installation of the PPE Exhaust Manifold Stud, Nut and Washer Kit is straightforward for experienced mechanics and enthusiasts familiar with Cummins diesel engines. The studs replace the factory bolts, allowing the exhaust manifold to be securely fastened with nuts for improved torque accuracy. Note that for 2003–2007 5.9L 24-valve engines, removal of the factory heat shield is required to access the manifold studs.

This kit fits the following engines and model years:

• 1994–1998 Cummins 5.9L 12-valve (aftermarket exhaust manifold only)
• 1998.5–2002 Cummins 5.9L 24-valve
• 2003–2007 Cummins 5.9L 24-valve (requires factory heat shield removal)
• 2007.5–2018 Cummins 6.7L 24-valve

What's Included:

• Precision centerless ground manifold studs
• 12-point flange nuts
• Washers

Ideal For:

This kit is perfect for Cummins diesel truck owners, fleet operators, and performance enthusiasts who want to maintain or improve the reliability of their exhaust manifold connections. It is especially beneficial for vehicles experiencing exhaust leaks due to stretched or corroded factory bolts, or for those upgrading to aftermarket exhaust manifolds requiring durable and precise fasteners.