Here’s the most detailed technical information available for the 3084589 Cummins fuel injector:

3084589 Cummins Fuel Injector Specifications

1. Primary Applications

• Engine Models:

• Designed for Cummins ISX15 (2013-2017) CM2250/CM2350 engines

• Compatible with QSX15 industrial engines (2014-2019)

• Common Equipment:

• Freightliner Cascadia (2013-2017)

• Peterbilt 387/389 (EPA10 models)

• Kenworth T660/T800 (with ISX15)

• Mining and marine applications

2. Technical Specifications

• Type: High-Pressure Common Rail (HPCR) with solenoid actuation

• Operating Pressure: 30,000-35,000 PSI (2070-2415 bar)

• Flow Rate: 500-550 cc/min @ 1000 bar

• Nozzle Configuration:

• 7-hole micro-sac design

• 145° spray angle

• 0.128mm orifice diameter

3. Key Features

• Precision Components:

• Hardened steel body with chrome-plated bore

• Tungsten carbide nozzle seat

• Viton high-temp seals

• Performance Characteristics:

• 3-stage injection capability

• Optimized for ultra-low sulfur diesel

• Compatible with biodiesel blends up to B20

4. Failure Symptoms

• Common Operational Issues:

• Hard cold starts

• Excessive white smoke at idle

• Cylinder misfire under load

• Fuel in crankcase (dilution)

• Diagnostic Trouble Codes:

• SPN 6287/FMI 2 (Injector Circuit)

• SPN 2972/FMI 4 (Injector Calibration)

• SPN 91/FMI 5 (Rail Pressure Control)

5. Replacement Requirements

• Calibration:

• Requires Cummins INSITE 7.6 or higher

• Must program injector trim code or automatically adapt

• Installation Specs:

• Torque: 50 Nm (37 lb-ft) + 90° turn

• Must use new copper crush washer

• Fuel line torque: 28 Nm (21 lb-ft)

• Special Tools Needed:

• Injector puller tool (Cummins #3824517)

• Bore cleaning kit

6. Cross-Reference & Updates

• Part Number History:

• Replaces 3057559 in later models

• Updated to 4923929 for 2018+ engines

• Aftermarket Equivalents:

• Bosch 0445110199

• Delphi DCR50021

• Denso DLLC150

7. Maintenance Criticals

• Must meet ISO 4406 18/16/13 standard

• Always replace fuel filters when servicing injectors

• Never reuse old seals

• Must perform injector learn procedure

• Requires fuel system prime after installation

• Core must be complete with all components

• Nozzle tip damage voids core refund

8. Performance Data

• Expected Service Life: 750,000 miles (proper maintenance)

• Pressure Test Parameters:

• Leak-off test: Max 30ml/min @ 1000 bar

• Pop pressure: 250-260 bar

9. Troubleshooting Tips

• If experiencing multiple injector failures:

• Check lift pump pressure (min 5 PSI)

• Verify fuel contamination levels

• Inspect ECM injector driver circuits

• What kind of CUMMINS fuel injector will you get from Rsolid ?

  1. You’ll get it all with; 100% O-ring replacement for proper sealing, a new Actuator Assembly, Spill Valve, To top it off, every nozzle is tested for 100% proper fuel delivery. It just doesn’t get much better than that.

  2. Meticulous testing? You got it! This injector goes through a strict reassembling and testing process for fuel delivery, injection pressure, and timing. If you want more power and reduced emissions, this is the way to go.

  3.To put things in perspective, you’re getting proper fit and function because strict OE specifications are met.

  There’s no doubt you’ll get exceptional quality and consistency. Why? Each injector is completely disassembled, components are cleaned, and lastly this bad boy is checked for wear and breakage. It comes from the reconstruction of China’s top fuel system OEM manufacturing factory, you can’t beat it