The part number 445120238 to be a Cummins common rail fuel injector used in ISB 6.7L, 5.9L, and 4.5L diesel engines. Here’s what you should know about it:

Application:

Cummins ISB 6.7L (2013+ commonly)

Cummins ISB 5.9L (later common rail versions)

Cummins 4.5L (some models)

Used in Ram 2500/3500 (6.7L), commercial trucks, and industrial equipment

Type:

High-pressure common rail fuel injector (CRI)

Electrically controlled solenoid-type injector

Replaces/OEM Numbers:

Cummins OEM #: 445120238 (may also cross to other numbers like 5299709, 4906919, 4906918)

Aftermarket equivalents may be available from brands like Bosch, Denso, or Delphi

Common Symptoms of a Failing Injector:

Hard starting or misfires

Excessive black/white smoke

Poor fuel economy

Rough idle or loss of power

Fault codes (e.g., P0201-P0206, P0263, P0087)

Replacement Notes:

Coding Required? Some Cummins common rail injectors need coding/calibration via diagnostic tools (e.g., Insite, OEM software).

Always replace with matching flow rates (or get them balanced if replacing one).

Torque specs must be followed to prevent leaks (typically ~25-30 Nm + angle torque).

OEM Cross References:

0-445-120-032, 0-445-120-114, 0-445-120-208, 0-445-120-238, 0-986-435-505, 0-986-435-505R, 0-986-435-505RX, 0445120032, 0445120103, 0445120114, 0445120208, 0445120238, 0986435505, 0986435505R, 0986435505RX, 19700123D, 241-130-1006, 2411300006, 3964273, 3968158, 3972887, 3972887NX, 3972888, 445120238, 4937700, 4937700NX, 4937701, 4940051, 4940051NX, 4940051RX, 4940051X, 5135790AA, 5135790AB, 5135790AC, 5135790AD, 5254688, 5254688RX, 5254689, 5263316, 5263316NX, 5263316PX, 5263316RX, 712-502, 712502, 7831-GN, 7831-PP, 7831GN, 7831PP, 986435505, BOS11727, DE801, DIS37, DT5135790R, DT5135790R-2, DT5135790R2, DT590002R, EX631042, P248822, P248822R, R5135790AB, R5135790AC, R5135790AD, R5135790AE, R5135790AF, R8310746AA, R986435505, R986435505-P30, R986435505P30, REB0986-435-505, REB0986435505