Product Description
Step up fueling on your LLY Duramax with the Industrial Injection 0433171860-R4 Extrude Honed Nozzle, flowed to 32 LPM for clean, controllable power when paired with proper air, lift-pump supply, and custom tuning. Each nozzle starts as an OE-spec part and is precision balanced after the extrude-hone process for consistent cylinder-to-cylinder delivery.
Fitment
- 2004.5-2005 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD - 6.6L Duramax LLY
What's Included
- (1) Extrude-honed injector nozzle - 32 LPM flow
- New copper crush washer
Key Features
- OE-spec plus nozzle, extrude honed and flow balanced
- 32 LPM (approx. +% over stock; tuning required for best results)
- Improved atomization for crisp response and strong top-end
- Individually tested on a state-of-the-art nozzle bench
- Sold individually (order 8 for a complete set)
Recommended Parts (CPP internal links)
- S&S Diesel 30% Over Reman Injector Set - LLY (good match for moderate builds)
- S&S Diesel 80% Over NEW Injector Set - LLY (for higher-output combos)
- S&S Diesel 100% Over NEW Injector Set - LLY
- Shop All GM Duramax Categories
Cross-Reference / Alternatives (LLY Nozzles, CPP only)
- 0433171860-R1 - 25 LPM
- 0433171860-R2 - 27 LPM
- 0433171860-R3 - 29 LPM
- 0433171860-R5 - 37 LPM
- 0433171860-R6 - 42 LPM
- 0433171860DFLY - 24 LPM (Dragonfly)
Helpful Notes
- Tuning is required to realize the benefits of higher-flow nozzles.
- We strongly recommend a quality lift pump and adequate turbo airflow for EGT control.
- Emissions note: competition-use only where applicable. Check local and federal laws.
FAQ
Is this nozzle sold individually or as a set?It is sold individually. Order a quantity of eight (8) for a full set on an LLY.
Do I need custom tuning with 32 LPM nozzles?Yes. Custom tuning is required to match pulse width and duration to the increased flow for clean drivability and optimal power.
What else should I upgrade?A quality lift pump, clean fuel filtration, and sufficient turbo airflow are highly recommended. Consider matched injector sets for higher power goals.
Is there a warranty?Industrial Injection performance parts typically carry a 1-year warranty; see product details for terms.
| Specifications for INDUSTRIAL INJECTION 0433171860-R4 | |
|---|---|
| Brand | Industrial Injection |
| Part Number | 0433171860-R4 |
| GTIN | Not specified by manufacturer |
| UPC | II4134000117 (as listed by distributors) |
| Engine Compatibility | 2004.5–2005 GM 6.6L Duramax LLY (Silverado/Sierra 2500/3500) |
| Configuration | Extrude-Honed Injector Nozzles, Race 4 (50% over / 32 LPM) |
| Country of Origin | Not specified |
| Core Charge | No core charge |
| Shipping Weight | ~1 lb |
| Package Dimensions | 10" × 4" × 3" |
| Shipping Method | Standard Ground (parcel) |
| Prop 65 Warning | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more. |
