Product Description
Replace failing or leaking injectors the right way. The Industrial Injection 0986435503SE-IIS is a remanufactured stock-flow common-rail injector built for the 2003–2004 Dodge Ram 2500/3500 5.9L Cummins. Each unit is fully disassembled, fitted with new wear components, and calibrated on a test bench to deliver OE-equivalent performance, smooth idle, and clean emissions when installed with proper fuel supply and filtration.
Fitment
- 2003–2004 Dodge Ram 2500/3500, 5.9L Cummins (Common Rail)
- Direct stock replacement (no tuning required when replacing like-for-like)
- Replaces OE/Bosch reference: 0986435503 (and superseding equivalents)
What’s Included
- (1) Remanufactured stock-flow injector, 0986435503SE-IIS
- New external seals/O-rings pre-installed
Recommended Parts (Internal Links Only)
For best results and warranty protection, pair your injector with the following CPP Diesel parts and install items:
- Additional Injectors / Sets
- Injector Install Kit (seals, crush washers)
- Injector Connector Tubes (03–04 CR)
- Injector Return Line Kit
- Fresh Fuel Filter (protects new injector)
- Shop All Industrial Injection
Why Buy from CPP Diesel
- OE-equivalent performance from brands we trust
- Diesel tech support that actually knows Cummins
- Fast shipping and clear core return instructions
Specifications
| Manufacturer | Industrial Injection |
| Part Number | 0986435503SE-IIS |
| Flow/Nozzle | Stock (OE-equivalent) |
| Engine | 5.9L Cummins (Common Rail) |
| Vehicle Fitment | 2003–2004 Dodge Ram 2500/3500 |
| Calibration | Test-bench calibrated to OE spec |
| Core Charge | Yes (refundable with acceptable core—see Core Policy) |
| Warranty | Manufacturer warranty—details vary by usage and install conditions |
| Emissions | Stock-equivalent replacement part; verify local regulations |
| UPC | Not provided by manufacturer (contact us to confirm) |
Install Notes
- Use new connector tubes and torque to factory spec.
- Prime/bleed the fuel system and verify adequate lift-pump pressure to protect injectors.
- Replace contaminated fuel filters and address any return line leaks before starting.
FAQ
Is tuning required after installing this injector?No—this is a stock-flow injector. When replacing a failed stock injector with another stock unit, no tuning is required.
Should I replace connector tubes with injectors?
Yes. Worn connector tubes can cause sealing issues and poor rail pressure. We strongly recommend replacing them at the same time.
Do I need to code the injector to the ECU?
On 2003–2004 5.9L Cummins, individual injector trim codes are not typically programmed like later model years. Follow factory service procedures.
What causes premature injector failure?
Contaminated fuel, low lift-pump pressure, poor filtration, or improper installation can damage injectors. Always address root causes before startup.
Is a core charge required?
Yes, this remanufactured part carries a refundable core charge. Return an acceptable core promptly per instructions to receive credit.
