Cummins 4937512 Common Rail Fuel Injector Assembly

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Cummins 4937512 Common Rail Fuel Injector Assembly

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Alternate Part Number	C4937512
Component Type	Common Rail Fuel Injector Assembly
Fuel System	Common Rail Direct Injection
Actuation Method	Solenoid Valve
Control Voltage	24V DC
Max Rail Pressure	1800 bar
Injection Nozzle Type	Multi-hole SAC (Sealing At Cone)
Compatible Engine Series	Cummins 8.9L / 8.3L (ISL, ISC, QSL, 6C, 6L)
OEM Cross Reference	3975929, 4974781, 5264270
Unit Weight	0.85 kg
Package Dimensions LxWxH	15.2 x 12.7 x 12.7 cm

Manufacturer No.

4937512
C4937512

OEM Part No.

3975929
4974781
5264270

Engine Part No.

Cummins ISL8.9
Cummins ISLE
Cummins L8.9
Cummins L375
Cummins 6C8.3
Cummins ISC
Cummins QSL9
Cummins QSC8.3
Cummins 6CT
Cummins 6LTAA8.9

Interchange No.

3975929
4974781
5264270
C4937512

Fitment Vehicles

Dongfeng Tianlong Flagship
Heavy Duty Trucks
Construction Machinery
Generator Sets
Agricultural Machinery

The Cummins 4937512 is a common rail fuel injector assembly designed for 8.9L and 8.3L diesel engine platforms. It utilizes a solenoid-actuated control valve for precise fuel metering and injection timing. The injector body is manufactured from high-strength alloy steel to withstand peak rail pressures exceeding 1800 bar. Nozzle geometry is calibrated for the specific combustion bowl of ISL/ISC/QSL series engines.

This part number supersedes and interchanges with C4937512, 3975929, 4974781, and 5264270. It is produced by Dongfeng Cummins Engine Co. (DCEC) and Cummins Inc. for OEM installation in on-highway trucks, off-highway construction equipment, and power generation units. Installation requires torque-to-yield clamp bolts and high-pressure fuel line replacement per service manual procedure 006-026.