Product Description
Overview
The Industrial Injection 0986435503SE-R1 is a Race 1 (25% over) remanufactured common-rail injector for the early 2003-2004 Dodge Ram 2500/3500 5.9L Cummins. Flow-benched and balanced, this R1 build targets ~100 HP over stock with approximately 30 LPM flow while maintaining crisp idle and drivability when paired with proper air and fuel support.
- Approx. 25% over / ~100 HP gain potential (supporting mods required)
- Flow: ~30 LPM (Race 1 calibration)
- Application: 2003-2004 5.9L Cummins (early common rail)
- Warranty: 1-Year (manufacturer; see details)
Fitment
Direct fit for 2003-2004 Dodge Ram 2500/3500 5.9L Cummins 24V (early common-rail CP3).
What's Included
- (1) Remanufactured injector, Race 1 (25% over)
- New seals installed (as applicable)
Recommended Supporting Parts
- CP3 Injection Pump Upgrades ('03-'07 5.9L) - ensure adequate supply for higher-flow injectors.
- Bosch/Cummins Injector Feed/Connector Tubes - replace any worn tubes to prevent return leaks.
- Valve Cover Gasket (OE) or MAHLE VS50416 - recommended during injector service.
- 03-07 5.9L Injector & Install Parts - tools, lines, and related components.
- 03-04 Injector Category - explore additional sizes/sets.
Notes
- Higher-flow injectors require adequate air (turbo) and fuel supply (lift pump/CP3). Monitor EGTs and rail pressure.
- Professional installation recommended; follow Cummins/Bosch procedures for connector tube seating and torque.
FAQ
Is tuning required to run R1 (25% over) injectors?Tuning is strongly recommended to optimize idle quality, drivability, and EGTs with higher-flow injectors.
Can I use the stock CP3 with these injectors?Some customers run R1 on a healthy stock CP3, but a quality CP3 (or upgraded unit) is advised to maintain commanded rail pressure under load. See our CP3 options.
Do I need new injector connector (feed) tubes?Replacing worn tubes and seals helps prevent return leaks and hard-start issues. Consider new OE tubes such as Cummins 4988806.
Is this sold as an individual injector or a set?This listing is sold individually. Order quantity 6 for a complete engine set.
What is the warranty and core policy?Manufacturer warranty is typically 1 year. A refundable core charge may apply per injector; cores must be returned within the stated timeframe and in rebuildable condition.
| Specifications for INDUSTRIAL INJECTION 0986435503SE-R1 | |
|---|---|
| Brand | Industrial Injection |
| Part Number | 0986435503SE-R1 |
| GTIN | Not specified by manufacturer |
| UPC | Not specified by manufacturer |
| Engine Compatibility | 2003–2004 Dodge Ram 2500/3500 5.9L Cummins 24-Valve (early common-rail) |
| Configuration | Remanufactured Injector, Race 1 (25% over) ~100 HP; ~30 LPM flow |
| Country of Origin | Not specified |
| Core Charge | $75 per injector (refundable per supplier policy) |
| Shipping Weight | ~2 lb (single injector; typical) |
| Package Dimensions | Approx. 11" × 5" × 3" (single-unit box) |
| Shipping Method | Ground (small-parcel) |
| Prop 65 Warning | This product can expose you to chemicals including lead and chromium, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. Learn more. |
