DDP LB7-75 Remanufactured 45% Over Injector Set

Upgrade your 2001-2004 6.6L LB7 Duramax with the DDP LB7-75 remanufactured injector set. These performance injectors flow 45% over stock and are sold as a precision-balanced and flow-matched set of 8 for even fuel delivery across all cylinders.

They deliver strong power gains (approximately 75 hp) and support up to 675–725 RWHP when paired with proper supporting modifications. These are the largest injectors generally recommended for use with a stock CP3 pump or turbo, making them a popular choice for street performance builds that still want good drivability.

Key Features

• Remanufactured using quality components for reliable operation
• 45% over stock flow
• Balanced and matched set of 8 injectors
• Supports substantial power increases with the right fueling, tuning, and airflow upgrades
• Ideal for performance-oriented daily drivers

Fitment 2001–2004 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD equipped with the 6.6L LB7 Duramax diesel.

Important Notes These injectors are not recommended for frequent or heavy towing applications.

LB7 injector lines are known to rust and can damage new injectors. We strongly recommend replacing the injector lines at the same time if they have not been changed in the last 40,000–50,000 miles.

A refundable core charge applies. Custom tuning and supporting modifications (fuel system, turbo, etc.) are required to realize the full potential of these injectors.

Built for owners who want more power and better fueling while staying within the limits of a stock CP3 and turbo setup.