2001–2004 LB7 Duramax Torque Lock Injector Cup Kit

Includes Install Tool & Hardware

Fix one of the most common LB7 Duramax failure points the right way. The Industrial Injection Torque Lock Injector Cup Kit permanently replaces the factory-pressed injector cups with a threaded, screw-in design—eliminating coolant intrusion, injector seal failures, and repeat tear-downs.

Engineered specifically for 2001–2004 GM LB7 Duramax engines, this kit includes everything needed for a professional-grade repair, including the proper install tool and all required hardware.

🔧 Key Features

• Converts factory press-in cups to threaded screw-in cups

• Prevents coolant leaks into the fuel system

• CNC-machined for a precise, leak-free fit

• Designed for long-term reliability and repeatable installs

• Ideal for stock or performance LB7 builds

📦 What’s Included

• 8 Torque Lock Injector Cups
• 16 Injector Cup O-Rings
• 1 cylinder head tap
• 1 torque lock cup install tool
• 1 bottle taping fluid

🚘 Vehicle Fitment

• 2001–2004 GM Duramax LB7

• Silverado & Sierra 2500HD / 3500HD

• 6.6L LB7 Diesel Engines Only

✅ Why Upgrade to Torque Lock Injector Cups?

Factory LB7 injector cups are prone to loosening and leaking over time. This screw-in design locks the cups in place, providing a permanent solution trusted by diesel shops and builders nationwide.

Built to solve the problem once—so you don’t have to do the job twice.
Perfect for injector replacements, head work, or preventative maintenance.

Note: Installation is HIGHLY recommended to be performed at a machine shop.