Product Description
Balance fuel and add clean power to your LB7 with the Industrial Injection 0433175275-R3 extrude-honed injector nozzle. This 31 LPM (Race 3 ~40% over) LB7 nozzle is flow-matched for smooth fueling, better atomization, and lower EGT potential when paired with proper tuning and airflow. Sold individually and includes a new copper crush washer.
Fitment
- 2001–2004 GM 6.6L Duramax LB7 (Chevrolet Silverado 2500/3500 & GMC Sierra 2500/3500)
What’s Included
- (1) Extrude-honed LB7 injector nozzle — 31 LPM (Race 3)
- (1) New copper crush washer
Key Features
- Flow-balanced for smooth idle and consistent cylinder-to-cylinder fueling
- Improved atomization for drivability and potential EGT reduction
- OE-spec new nozzle; no core required
- Sold individually — order quantity (8) for a full set
Recommended Parts (CPP internal links)
- BD Diesel 1050141 LB7 Injector Install Kit
- DTech DT660026 LB7 Injector Installation Super Kit
- Fleece FPE-34611 LB7 Injection Lines (set of 8)
- DTech DT660020 LB7 Fuel Return Line Kit
- MAHLE GS33757 Valve Cover & Injector Seal Kit (LB7)
- Shop All Duramax Injectors & Nozzles
Cross-Reference / Alternatives (LB7 nozzle sizes)
Helpful Notes
- Professional installation and calibration recommended. Match airflow (turbo/exhaust) and lift-pump/HP fuel supply to fueling goals.
- For a complete solution, consider flow-matched injector sets (S&S, DDP) sized to your target power level.
- Competition/Off-Road Use: Check local emissions rules before installing performance nozzles on a registered street vehicle.
FAQ
How many do I need?Nozzles are sold individually. Order quantity (8) for a full set on a V8 LB7.
Will 31 LPM work with a stock turbo?Yes, with proper tuning. For sustained heavy loads or higher targets, upgrade airflow and consider a lift pump.
Do these include seals?Includes a new copper crush washer. For a full reseal during service, add the valve cover/injector seal kit and a return line kit listed above.
Are these street-legal?Many performance nozzles are labeled for competition-only use. Verify and follow your local/state emissions regulations.
