Cummins 14L 6.7L 24V Engine Fuel Injectors Part G5521671 For 2004

Cummins 14L 6.7L 24V Engine Fuel Injectors Part G5521671 For 2004

Details
The Cummins G5521671 injectors is a core component of the original electronically controlled unit pump fuel injection system for the 2004 Cummins heavy-duty diesel engine. It is compatible with 14L (ISX14) and 6.7L (ISB6.7) engines, supporting a 24-valve structure and a 24V electrical system. It is primarily used in mainstream heavy-duty truck platforms such as Freightliner and Peterbilt, and has been officially designated as the sole repair part for the 2024 Cummins heavy-duty diesel engine.
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Fuel System
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Description
Technical Parameters

Product Images

 
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Product Parameters

 

Parameter Category

Detailed Description

Part number ‌G5521671
Matched engine

ISX14:ISX14-C350,ISX14-C400,ISX14-C450

‌ISB6.7:ISB6.7-C245,ISB6.7-C260,ISB6.7-C285

Spray type Electrical control single pump
Maximum jet pressure 2200 bar(31,900 psi)
Single injection volume 85 - 110 mm³ per cycle (at 2100 rpm)
Spray angle 150° ±5° (cone-shaped atomization)

Number of spray holes

6 Holes
Valve needle material Tungsten carbide (WC-Co) hard alloy
Sealing material Fluororubber (FKM) + Ceramic Sealing Ring
Working voltage 24V DC (pulse drive)
Working temperature -40°C to +150°C
Replacement cycle and service life

Recommended replacement mileage: 600,000 - 700,000 kilometers (approximately 10,000 - 12,000 hours)

Service life: In environments with high humidity and high sulfur content such as in Chongqing, if the fuel filter is not replaced regularly, the service life may be shortened to 400,000 kilometers.

 

Product Advantages

 

 

The Cummins G5521671 injectors utilizes electronically controlled unit pump technology, achieving injection pressures up to 2200 bar. Combined with a 24-valve combustion chamber design, it achieves uniform distribution of ultra-fine fuel atomization, improving combustion efficiency and reducing fuel consumption and black smoke emissions. In terms of materials, the needle valve of the Cummins G5521671 injector uses tungsten carbide hard alloy, which can withstand corrosion from 500 ppm high-sulfur diesel fuel, offering a service life far exceeding that of ordinary aftermarket parts. This injector is highly compatible, suitable for Cummins engines with 14L and 6.7L displacements and 24V electrical systems. It is fully compatible with the Cummins Celect electronic fuel system, high-pressure fuel lines, and ECU, effectively improving maintenance efficiency.

 

About Us

 

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FAQ

 
 

 

Q: 1. Which Cummins engines are compatible with the G5521671 fuel injector?

A: It is suitable for 2004 Cummins 14L (ISX14) and 6.7L (ISB6.7) engines with a 24-valve structure and 24V electrical system. It is not suitable for Cummins engine models after 2007 or engines outside the ISX/ISB series.

Q: 2. What are the core technical advantages of the G5521671 fuel injector?

A: It uses a 2200 bar high-pressure electronically controlled unit pump design, with a tungsten carbide needle valve resistant to high-sulfur diesel corrosion. It supports multi-stage injection, precisely matching the 2004 ECU calibration to ensure combustion efficiency and emission compliance, with a lifespan exceeding 600,000 kilometers.

Q: 3. Can other brands of fuel injectors be used to replace the G5521671?

A: Not recommended. Non-original parts cannot match the Cummins control logic, which may easily lead to P0201–P0206 fault codes, power imbalance, or ECU lockout. Only the official ReCon remanufactured part G5521671R is recommended.

Q: 4. Is the G5521671 fuel injector considered a hazardous material for export?

A: No, it is not a hazardous material. It is a metal mechanical part and does not contain flammable or explosive substances. The HS code is 8413.91. It can be declared as ordinary cargo and does not require special packaging or hazardous material labels.

Q: 5. What are the international shipping packaging requirements for this fuel injector?

A: It uses a moisture-proof cardboard box + foam lining + individual plastic sealed bags. Each box is limited to 1-2 pieces. The outer box is marked "Original Part G5521671", "Fragile", and "This Side Up". It complies with ISO 11607 transportation standards, providing shock and moisture protection.

 

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