The Story
TSP's fasteners are composed of 35 chromoly steel for a minimum tensile strength of 190,000 PSI. Threads are rolled after heat treatment and then tested for tensile and yield strength. All hardware is then given a black oxide finish and oil coating to protect from rust and corrosion.
COMPATIBLE WITH
GM DURAMAX DIESEL V8
• 6.6L / 403 in³ Duramax (LB7, LLY, LBZ, LMM, LML)
COMMON VEHICLE APPLICATIONS
Chevrolet Silverado HD (2001–2016 6.6L Duramax)
GMC Sierra HD (2001–2016 6.6L Duramax)
Performance towing and diesel upgrade applications
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, to 125 ft-lbs |
| Color | Black |
| Fastener Style | Stud |
| Grade | Performance |
| Head Style | 12-point |
| Material | 35 Chromoly Steel |
| Quantity | Sold as a kit |
Description
TSP's fasteners are composed of 35 chromoly steel for a minimum tensile strength of 190,000 PSI. Threads are rolled after heat treatment and then tested for tensile and yield strength. All hardware is then given a black oxide finish and oil coating to protect from rust and corrosion.
COMPATIBLE WITH
GM DURAMAX DIESEL V8
• 6.6L / 403 in³ Duramax (LB7, LLY, LBZ, LMM, LML)
COMMON VEHICLE APPLICATIONS
Chevrolet Silverado HD (2001–2016 6.6L Duramax)
GMC Sierra HD (2001–2016 6.6L Duramax)
Performance towing and diesel upgrade applications
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, to 125 ft-lbs |
| Color | Black |
| Fastener Style | Stud |
| Grade | Performance |
| Head Style | 12-point |
| Material | 35 Chromoly Steel |
| Quantity | Sold as a kit |
