Product Description
Unlock clean, balanced power on your LB7 with the INDUSTRIAL INJECTION 0433175275-R5 extrude-honed injector nozzle (39 LPM). Each nozzle is precision-honed and flow-tested to deliver consistent fueling with proper tuning and airflow.
Fitment
- 2001–2004 GM 6.6L Duramax LB7 (Chevrolet Silverado/GMC Sierra 2500HD/3500HD)
What’s Included
- (1) Extrude-honed injector nozzle — 39 LPM (sold individually)
- (1) New copper crush washer
Key Features
- Extrude-honed and flow-matched for consistent cylinder-to-cylinder delivery
- Supports strong street/strip builds with proper air & custom calibration
- OE-style fit; install with standard LB7 nozzle tooling and procedures
Recommended Parts (CPP Internal Links)
- BD Diesel 1050141 LB7 Injector Install Kit
- Industrial Injection RTF26401 LB7 Injector & Return Washers
- Industrial Injection PDM-07021K LB7 Screw-In Injector Cup Kit
- Shop All Duramax Injectors & Nozzles
Cross-Reference / Alternatives (Flow Options)
Helpful Notes
- Sold per nozzle. For best results, replace nozzles as a matched set of 8.
- Custom tuning and adequate airflow are required to realize gains and control EGT.
- Always verify injector balance rates and rail pressure control after installation.
FAQ
Do I need tuning with 39 LPM nozzles?Yes. A calibration tailored to 39 LPM is required for proper fueling, drivability, and EGT control.
Can I mix different LPM nozzles?No. Mixing sizes will cause imbalance. Replace as a matched set for consistent fueling.
Are new seals included?Each nozzle includes a new copper crush washer. We also recommend fresh return/crush washers during service (see the kit above).
What else should I upgrade while I’m in there?Use a complete LB7 injector install kit, consider screw-in cups if your OE cups are pitted, and verify lift-pump supply and filtration.
