PPE HEAD STUD KIT 118034700 | 2017-2025 6.6L DURAMAX L5P

Strengthen the cylinder head clamping force in your 2017–2024 GM 6.6L Duramax L5P with the PPE 118034700 Head Stud Kit. Engineered for high-performance, towing, and competition applications, these premium head studs are designed to withstand the extreme cylinder pressures and boost levels commonly found in modified diesel engines.

Each stud is precision center-less ground for exceptional accuracy and thread rolled to Mil-S-8879 specifications to increase strength while reducing stress concentrations at the threads. Independently verified to exceed 231,900 PSI tensile strength, PPE head studs provide the confidence needed for demanding applications on the street, track, towing route, or off-road.

Highly recommended for engines operating at 45 PSI of boost or greater, this complete kit includes hardened parallel-ground washers, precision nuts, and specially formulated assembly lubricant to help ensure accurate torque readings and consistent load distribution during installation.

Features:

• Verified tensile strength exceeding 231,900 PSI
• Precision center-less ground for accuracy and consistency
• Threads rolled to Mil-S-8879 specifications
• Designed to withstand extreme cylinder pressures
• Highly recommended for applications exceeding 45 PSI of boost
• Improves head gasket retention and sealing performance
• Ideal for towing, performance, and competition applications

Kit Includes:

• High-strength head studs
• Precision nuts
• Hardened parallel-ground washers
• Specially formulated assembly lubricant

Installation Note:

Proper thread preparation is critical to achieving accurate torque values and optimal fastener performance. Thread cleaning chasers are recommended to remove debris, corrosion, and residue from the engine block threads prior to installation.

Fitment:

• 2017–2025 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax L5P
• 2017–2025 GMC Sierra 2500HD/3500HD 6.6L Duramax L5P
• 2019–2025 Chevrolet Silverado 4500HD/5500HD/6500HD 6.6L Duramax L5D
• 2019–2025 International CV Series 6.6L Duramax L5D