Product Description
Make big power with confidence. The Industrial Injection 0986435503SE-R3 is an 88% over remanufactured common-rail injector for the early 2003–2004 5.9L Cummins. Each unit is extrude-honed, flow-balanced to tight tolerances, and built with brand-new OEM components for consistent fueling and clean burn.
Fitment
- 2003–2004 Dodge Ram 2500/3500 — 5.9L Cummins 24-valve (early common rail)
What You Get
- (1) Industrial Injection 0986435503SE-R3 Reman Injector — 88% over
- New copper crush washer & O-rings
Why It Works
- Flow: ~45 LPM (≈88% over stock) for substantial fuel delivery headroom
- Power: Supports ~up to 180 HP gain with proper turbo, pump, and tuning
- Quality: Individually tested on OEM equipment; balanced tighter than OE
Recommended Supporting Parts
For best results, pair with an upgraded turbo and ensure clean high-pressure supply to prevent contamination.
- Industrial Injection Silver Bullet PhatShaft 62/64 Turbo (03–04 5.9L): 62mm or 64mm
- Injector Fuel Supply Tubes (replace during injector install): #3 Tube 4988809, #6 Tube 4988806
- Shop all 03–04 5.9L injector options
Specifications
| Brand | Industrial Injection |
| Part # | 0986435503SE-R3 |
| UPC | 840256901870 |
| Engine | 5.9L Cummins 24V (Early 2003–2004 Common Rail) |
| Flow Increase | ~88% over stock (≈45 LPM) |
| Estimated Power Support | ~180 HP gain with proper supporting mods |
| Configuration | Remanufactured, extrude-honed & flow-balanced |
| Fuel System | Bosch common rail |
| Warranty | 1-year, unlimited mileage |
| Core Charge | $150 (refundable upon eligible core return) |
| Sold As | Each (order 6 for a complete set) |
Installation Notes
- Always replace injector connector/supply tubes and properly clean seats to prevent contamination.
- Tuning and additional airflow (turbo) are recommended to fully utilize added fueling.
Cross-Reference / Alternatives (03–04 Early 5.9L)
FAQ
Is this one injector or a full set?This listing is for one (1) reman injector. Order a quantity of six for a complete set.
Do I need new injector connector/supply tubes?Yes, replacing the tubes during injector service is strongly recommended to avoid contamination and sealing issues. See the recommended tubes above.
What supporting mods do I need for 88% over?Pair with an upgraded turbo (e.g., Silver Bullet PhatShaft) and adequate high-pressure supply (healthy CP3 and lift pump). Custom tuning is often required to fully utilize added fuel.
Warranty and core policy?1-year, unlimited-mileage warranty. Core charge is $150; refund is issued when a serviceable core is returned within the stated window.
