1. Basic Product Information & Core Specific-ations
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General No.
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Product Name
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OEM Cross Reference Numbers
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Core Specific-ations
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3407776
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c-ummins Fuel Injector
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3407776, 340-7776, 3407776RX, 3411381, 3411765, 3087560, 3087733, 3087807, 3095086, 3083846T, 3073995F, 4307516, EX631776
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Material: High-Strength Heat-Resistant Alloy Steel (with Anti-Corrosion & Anti-Wear Ceramic Coating); Type: CELECT Electronic Control / Precision Mechanical Fuel Injector; Weight: 1.91kg (4.21lbs); Size: 14.8×5.9×4.0 inches (37.6×15.0×10.2cm); Injection Pressure: Up to 3100bar; Response Time: ＜0.55ms; Certific-ation: ISO 9001, TS 16949; Nozzle Type: High-Precision 6-Hole Low-Inertia Nozzle (Anti-Carbon Deposition, Anti-Clogging Nano-Coating, Optimized Flow Channel for N14 Combustion Chambers)[3]; Valve Type: Closed-Type (ensures rapid fuel cut-off without dripping)[1]; Compatible with c-ummins PT fuel system; Fuel Type: Low-Sulfur Diesel (max 10ppm sulfur); Working Temperature Range: -42℃ to 570℃; Coil Resistance: High Resistance (12~15Ω) for Electronic Variants[1].
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2. Product Features & Competitive Advantages
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General No.
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Product Name
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OEM Cross Reference Numbers
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Features & Advantages
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3407776
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c-ummins Fuel Injector
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3407776, 340-7776, 3407776RX, 3411381, 3411765, 3087560, 3087733, 3087807, 3095086, 3083846T, 3073995F, 4307516, EX631776
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1. Dual compatibility with c-ummins N14 CELECT electronic models, CELECT Plus variants, and selected mechanical N14 models, perfectly matching the engine's patented PT fuel system to optimize combustion efficiency and power output, complementing the diesel engine's high-torque, low-fuel-consumption advantages[2]; 2. High-strength heat-resistant alloy steel with strict heat treatment and ceramic coating enhances wear resistance and corrosion resistance, extending service life to 24,000+ working hours in harsh high-temperature and high-pressure environments, adapting to the engine's long-term heavy-load operation needs; 3. Integrates precision electronic control (for CELECT variants) and mechanical control (for mechanical variants), enabling ultra-accurate fuel metering and load-adaptive parameter adjustment, ensuring stable performance under all operating conditions of N14 engines[1]; 4. High-precision 6-hole low-inertia nozzle with anti-carbon and anti-clogging treatment ensures uniform and fine fuel atomization, promoting complete combustion, reducing fuel consumption by 31-34%, and optimizing power output (315-555 HP), aligning with the engine's fuel economy and high-power advantages[3]; 5. 100% pre-delivery testing (pressure, flow, spray, fatigue), including ultrasonic cleaning and leakage inspection, ensures zero leakage, no dripping, and OEM-matched performance, meeting the strict sealing and spray quality requirements of diesel injectors[1]; 6. OEM-compatible design, direct replacement without modific-ation, easy installation with high-quality seals for quick maintenance, consistent with the engine's easy maintenance features; 7. Enhanced high-temperature tolerance (up to 570℃) and anti-vibration performance, suitable for long-term heavy-load operation of construction machinery, heavy-duty trucks, and oilfield equipment, adapting to the engine's wide applic-ation scenarios; 8. Optimized internal flow channel reduces fuel resistance, improving delivery efficiency and further extending the injector's service life, matching the PT fuel system's design principles; 9. Reinforced sealing structure prevents fuel leakage, ensuring stable fuel supply and reducing operational risks, meeting the diesel fuel supply system's core requirements[1]; 10. Advanced anti-clogging technology prevents nozzle blockage caused by impurities, reducing maintenance frequency and operational downtime; 11. Clear compatibility distinction from ISBE, M11 and other c-ummins series, avoiding misinstallation and ensuring engine operational safety; 12. Complies with c-ummins global quality standards, backed by reliable performance and long-term parts support, consistent with the engine's global reputation for durability; 13. Optimized atomization reduces engine carbon deposition, improving engine cleanliness and extending overall engine service life, complementing the engine's durable design; 14. Closed-type valve design ensures rapid fuel cut-off without dripping, meeting the core working requirements of diesel engines and preventing fuel waste[1]; 15. Wide temperature adaptability (-42℃ to 570℃), suitable for extreme cold and high-temperature working environments, expanding applic-ation scope; 16. Compatible with low-sulfur diesel, protecting internal precision components and complying with environmental emission standards; 17. High-resistance coil design for electronic variants ensures stable current transmission and long service life of electronic control components[1]; 18. Optimized spray angle (155°) matches N14 combustion chamber design, further improving combustion efficiency and reducing noise.
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3. Compatible Equipment & Applic-ation Scenarios
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General No.
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Product Name
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OEM Cross Reference Numbers
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Compatible Equipment & Applic-ations
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3407776
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c-ummins Fuel Injector
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3407776, 340-7776, 3407776RX, 3411381, 3411765, 3087560, 3087733, 3087807, 3095086, 3083846T, 3073995F, 4307516, EX631776
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Exclusively compatible with c-ummins N14 series diesel engines (CELECT electronic variants, CELECT Plus variants, and selected mechanical N14 models; CPL: 2402, 2603, 2802, 2901, 3001); heavy-duty trucks (Peterbilt 379, Kenworth W900, Freightliner FLD, dump trucks, logging trucks); industrial generator sets (330-1150kW), leveraging the engine's high-output performance for stable power supply, which aligns with the high power advantage of diesel engines[2]; heavy construction machinery (bulldozers, road rollers, rotary drilling rigs, excavators, rock crushers); oilfield and energy sector power modules; water pump and irrigation systems; and other equipment equipped with N14 engines. Suitable for harsh working environments with high dust, high humidity, frequent heavy-load operations, long continuous working hours, and high-temperature conditions, adapting to the engine's rugged design. It is also applicable to engineering vehicles operating in plateau, mountainous, high-altitude, and extreme cold areas, adapting to complex terrain and extreme working conditions due to its wide temperature adaptability. As a key component of the diesel fuel injection system, it ensures stable fuel supply for various N14-equipped equipment under different working conditions, complementing the engine's wide applic-ation scope. Not compatible with ISBE series engines, M11 series engines, or other c-ummins engine series, exclusively designed for N14 series to ensure performance matching and operational safety, avoiding damage to the engine's fuel supply system. Its 6-hole nozzle design and optimized spray angle make it particularly suitable for N14 engines used in heavy-duty on-highway and industrial applic-ations requiring balanced performance and fuel efficiency[3].
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4. Quality Assurance & Maintenance Guidelines
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General No.
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Product Name
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OEM Cross Reference Numbers
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Quality & Maintenance
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3407776
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c-ummins Fuel Injector
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3407776, 340-7776, 3407776RX, 3411381, 3411765, 3087560, 3087733, 3087807, 3095086, 3083846T, 3073995F, 4307516, EX631776
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12-month standard warranty (consistent with industry leading OEM warranty standards); 100% pre-delivery testing, including ultrasonic cleaning, pressure tightness, flow rate calibration, and spray pattern inspection, to ensure compliance with OEM working requirements and stable performance, in line with the inspection standards for precision injector components and c-ummins' quality standards. Maintenance guidelines: Use clean high-grade low-sulfur diesel (max 10ppm sulfur) to protect internal precision components (including solenoid valves for electronic variants, plungers for mechanical variants, and 6-hole nozzles-key precision parts of the injector)[1][3]; replace fuel filters every 5,500-7,500 working hours, consistent with the engine's maintenance cycle; inspect for leaks, wear, and carbon deposits every 300 working hours; avoid disassembling the injector without professional guidance to prevent damage to critical components that determine injector performance, especially the electronic control components and nozzle[1]; keep the injector clean during installation to avoid dust and debris entering internal components, which could block the 6-hole nozzle and affect atomization[3]; store in a dry, clean environment to prevent moisture and dust damage, and avoid exposure to extreme temperatures during storage. Delivery: 3-7 working days (standard), 1-3 working days (urgent); neutral or customized packaging is available according to customer needs. Note: Confirm engine model (N14 series only) and OEM cross reference numbers before purchase to avoid misinstallation; not compatible with ISBE series injectors (such as 0 445 120 007); core return policy available (cores must be returned within 30 days for full core credit).
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