ENGINE AR-PRIMARY 4551479 - Caterpillar

4551479 ENGINE AR-PRIMARY Caterpillar parts

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Alternative (cross code) number:
CA4551479
455-1479
4551479

Buy ENGINE AR-PRIMARY 4551479 Caterpillar genuine, new aftermarket tractor parts with delivery

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455-1479 4551479 EMCP4.1 EMCP4.2 Electronic Control Module Programed for Caterpillar C7.1DE200E0 C7.1DE220E0 C7.1DE150E0 C7.1DE150E DE165GC Generator Set

$1,199.90

30 Jul 2025

HK: HIRINTOL-shop

455-1479 4551479 EMCP4.1 EMCP4.2 Electronic Control Module Programed for Caterpillar C7.1DE200E0 C7.1DE220E0 C7.1DE150E0 C7.1DE150E DE165GC Generator Set
HIRINTOL ????Replace Part Number: 455-1479 4551479 || ????Compatible Model: for Caterpillar Generator Set C7.1DE200E0, C7.1DE220E0, C7.1DE150E0, C7.1DE150E, DE165GC || ????Clear Display: It adopts high-resolution LCD screen, which can clearly display relevant operation information, equipment status and other content. || ????Easy To Operate: the interface is simple and intuitive, easy to operate and control the running status and various parameters of the excavator. || ????Durable And Reliable: It has high-quality materials and structures, durable and reliable, and can adapt to harsh working environments and continuous use needs.

IMELBUFF 455-1479 4551479 ECM Engine Electronic Control Panel EMCP4.1 EMCP4.2 EMCP4.2B for Caterpillar CAT C7.1DE200E0 C7.1DE220E0 C7.1DE150E0 Generator Set

$1,199.90

14 Jul 2025

CN: IMELBUFF Excava

IMELBUFF 455-1479 4551479 ECM Engine Electronic Control Panel EMCP4.1 EMCP4.2 EMCP4.2B for Caterpillar CAT C7.1DE200E0 C7.1DE220E0 C7.1DE150E0 Generator Set
IMELBUFF ????Part Number: 455-1479, 4551479 || ????Application: for Caterpillar Generator Set C7.1DE200E0, C7.1DE220E0, C7.1DE150E0 || ????Program Version: EMCP 4.1, EMCP 4.2, EMCP 4.2B || ✅Warm Tips: This ECM needs to be Programmed. Please send us the following information: ECM Part Number Photo, Generator Set Nameplate, Program Version || ????Service: 1-year-warranty and 24 hour support for customer service. Please feel free to contact us by amazon email if you have any question with the product. Thank you for choosing IMELBUFF

MagnaFlow Catalytic Converter 4551479: California Grade, Direct-Fit (CARB Compliant)

$1,395.00

06 Jun 2025

US: MAGNAFLOW

MagnaFlow Catalytic Converter 4551479: California Grade, Direct-Fit (CARB Compliant)
MagnaFlow Exhaust Products PLEASE VERIFY FITMENT AND EFN COMPATIBILITY PRIOR TO PURCHASE. || CALIFORNIA/CARB COMPLIANT - Extensive testing and certification processes are followed to guarantee that 4551479 meets emissions standards set by CARB (California Air Resources Board). This catalytic converter is also compliant in states adhering to these standards. || DIRECT-FIT INSTALLATION - State-Of-the-Art 3D scanning is used to ensure this direct-fit catalytic converter perfectly fits your vehicle, enabling do-it-yourself installation. All required hardware is included. || SPUN BODY DESIGN - Durable stainless-steel construction, mandrel bent piping, precisely manufactured flared receivers, OEM-like O2 port locations and integrated butt joints make installation easy while guaranteeing optimal performance. The spun-body design ensures excellent corrosion resistance. || CARB GRADE - Catalytic converter 4551479 is designed to meet California emissions standards, as well of those of other CARB-regulated states. || 5 YEAR / 50,000-MILE LIMITED WARRANTY - Worry-free ownership is made possible thanks to the 5 year/50,000-mile construction and emissions warranty included with this MagnaFlow catalytic converter

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Illustration 1 g03372576
Schematic of the Accelerator Pedal Position Sensor
This diagnostic code is associated with the Accelerator Pedal Position Sensor. The FMI 04 means that the ECM has determined that the voltage of the circuit for the position sensor is below normal. The Accelerator Pedal position control has an output frequency of approximately 500 Hz. The duty cycle of the signal changes as the Accelerator Pedal pedal position is changed. The duty cycle increases as the Accelerator Pedal pedal is depressed. The Accelerator Pedal pedal values are dependent on the Accelerator Pedal pedal linkage. Valid values range from 5% to 95% duty cycle.The possible causes of this diagnostic code are listed below:
Improperly adjusted Accelerator Pedal pedal linkage.
The signal circuit for the sensor is shorted to ground.
The sensor has failed.
The ECM has failed. The ECM is unlikely to fail.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 2795 FMI 04 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:The diagnostic code will generate a level 2 warning. Underspeed Control will be disabled and the hystat transmission will be limited to low speed.Test Step 1. Check The Output Of The Sensor
At the back of the harness connector for the sensor, insert a 7X-1710 Multimeter Probe along the signal wire (contact C).
At the back of the harness connector for the sensor, insert a 7X-1710 Multimeter Probe along the ground wire (contact B).
Turn the key start switch to the ON position.
Measure the duty cycle of the signal. The valid sensor range is 5% duty cycle to 95% duty cycle. This fault occurs for <5% duty cycle. Expected Result:The duty cycle is less than 5% for the whole range of the Accelerator Pedal pedal.Results:
OK - The duty cycle is less than 5% for the whole range of the Accelerator Pedal pedal. Proceed to Test Step 2.
NOT OK - The signal from the sensor is only invalid for part of the Accelerator Pedal pedal range.Repair: The sensor is not adjusted correctly. Adjust the Accelerator Pedal pedal linkage so the sensor signal is valid through the entire range.STOPTest Step 2. Check The Sensor
The key start switch remains in the ON position.
Ensure that the diagnostic code is active.
Observe the status of the diagnostic code. Disconnect the sensor from the machine harness. Expected Result:The CID 2795 FMI 04 remains active. The FMI has not changed and the 04 is still active.Results:
OK - The diagnostic code remains active. The sensor is correct. Proceed to Test Step 3.
NOT OK - The diagnostic code is no longer active or the FMI has changed from 04 to 03.Repair: Replace the sensor or repair the harness.STOPTest Step 3. Check The Wiring Harness Of The Sensor For A Short To Ground
Disconnect the negative battery cable and turn the key start switch to the OFF position.
Disconnect the machine