The part number 0432193645 is associated with a fuel injector for the Cummins ISB 5.9L diesel engine. Here’s what you need to know:
Key Details:
Part Number: 0432193645
Application: Cummins ISB 5.9L (common in Dodge Ram 2500/3500 with the 5.9L Cummins, particularly in models from the mid-2000s)
Injector Type: Likely a Bosch or Cummins remanufactured unit (depending on supplier)
Engine Compatibility:
ISB 5.9L (2003–2007) – Common in Dodge Ram trucks (2003–2007.5)
May also fit earlier/later models, but verify compatibility.
Notes:
Reman vs. New:
This part number is often sold as a remanufactured injector (restored to OEM specs).
New OEM injectors may have a different part number (e.g., 0432240600 for newer replacements).
Symptoms of a Bad Injector:
Hard starting, rough idle, misfires, excessive smoke (white or black), or poor fuel economy.
Installation Tips:
Always replace injector seals and washers when installing.
Torque to spec (typically ~50–60 lb-ft for the hold-down bolt).
Perform a cylinder contribution test (using a scan tool) to verify proper operation after replacement.
1. Type & Design
Electro-hydraulic injector (operates via high-pressure oil from the fuel rail and an electronic solenoid).
Pop pressure: Typically around 23,000–26,000 psi (varies slightly by calibration).
Nozzle type: Multi-orifice (usually 6–8 holes) for optimized spray pattern.
Body material: Hardened steel with copper sealing washers.
2. Flow Rate & Calibration
3. Electrical Specifications
Solenoid resistance: ~0.5–2.0 ohms (measured across terminals).
Voltage requirement: 12V DC (pulsed signal from ECM).
OEM Cross References:
0-432-193-645, 0432193645, 045996, 149-888-0003, 1498880003, 19700183D, 3944200, 3944200RX, 432193645, JR944200
