Pro Series 01-16 GM Duramax Diesel 6.6L Cylinder Head 12-point Stud Kit

Upgrade your diesel engine with the Top Street Performance Pro Series Duramax Cylinder Head 12-Point Stud Kit. Designed for 2001-2016 GM 6.6L Duramax diesel engines, this Duramax head stud kit provides the strength and clamping force needed to help maintain reliable cylinder head sealing in stock, towing, and performance applications. Whether you're replacing factory hardware, performing head gasket service, or building a high-performance diesel engine, this Duramax cylinder head stud kit delivers dependable retention under demanding conditions.

Stronger Cylinder Head Retention
Engineered to provide consistent clamping force, these 6.6 Duramax head studs help support cylinder head sealing and resist head lift under increased cylinder pressure. Ideal for Duramax head gasket replacement, towing applications, and performance diesel engine builds.

High-Strength Performance Construction
Manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI, this diesel head stud kit is built for durability and long-term reliability. Threads are rolled after heat treatment and finished with a black oxide coating and protective oil finish for corrosion resistance and dependable performance.

Fits LB7, LLY, LBZ, LMM & LML Duramax Engines
Designed for GM 6.6L Duramax diesel applications including LB7, LLY, LBZ, LMM, and LML engine platforms. An excellent choice for stock replacement, heavy towing, diesel performance, and engine rebuild projects.

Ideal for Towing & Performance Builds
Perfect for head gasket service, engine rebuilds, towing applications, and high-cylinder-pressure diesel builds where upgraded Duramax head studs and fresh cylinder head fasteners are recommended. Performance diesel builders commonly upgrade to head studs when increasing boost levels and cylinder pressure.

COMPATIBLE WITH
GM DURAMAX DIESEL V8
• 6.6L / 403ci LB7 (2001-2004)
• 6.6L / 403ci LLY (2004.5-2005)
• 6.6L / 403ci LBZ (2006-2007)
• 6.6L / 403ci LMM (2007.5-2010)
• 6.6L / 403ci LML (2011-2016)

COMMON VEHICLE APPLICATIONS
Chevrolet Silverado 2500HD & 3500HD Duramax
GMC Sierra 2500HD & 3500HD Duramax
Performance towing applications
Diesel performance builds
Head gasket replacement projects

NOTES
Designed for 2001–2016 GM Duramax 6.6L cylinder head stud applications.

Verify engine code, head gasket selection, torque procedure, and model year before installation.

Not compatible with 2017+ L5P Duramax unless specifically confirmed.

SPECIFICATIONS
Torque: 3 steps up to 125ft-lbs / step 1 35ft-lbs / step 2 75 ft-lbs / step 3 125ft-lbs
Color: Black
Fastener Style: Stud
Grade: Performance
Head Style: 12-point
Material: 35 Chromoly Steel
Quantity: Sold as a kit