Strengthen the foundation of your engine with the PPE Diesel Main Stud Kit for 20012005 GM 6.6L Duramax (LB7/LLY) engines. Designed to handle the extreme pressures and high horsepower of performance builds, these main studs offer superior clamping force and durability over factory bolts.

Precision-machined and heat-treated for maximum strength, this kit helps prevent main cap movement and ensures critical bottom-end stability essential for high-performance, towing, or race applications.

Whether you’re rebuilding or upgrading, PPEs main stud kit is the trusted choice for serious engine reliability.

Features:

• Fits 20012005 GM 6.6L Duramax LB7/LLY

• Improves bottom-end strength and reliability

• Heat-treated, high-strength steel construction

• Superior clamping force vs. OEM bolts

• Ideal for high-performance and heavy-duty use

• Includes studs, nuts, and washers for full install