Torque-Lock Injector Cup Kit for 2001–2004 LB7 Duramax

Description

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.

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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

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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

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Vehicle Fitment

• 2001–2004 GM Duramax LB7

• Silverado & Sierra 2500HD / 3500HD

• 6.6L LB7 Diesel Engines Only

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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.

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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.

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