Cummins fuel injector 4903472 plays a key role in atomization and injection within the engine fuel system. Using high-pressure common rail technology, it breaks fuel into 8-10 micron atomized particles, evenly distributed in the combustion chamber to ensure full mixing with air, improving combustion efficiency to over 95%, significantly reducing fuel consumption and exhaust emissions. It is compatible with Cummins ISB6.7, QSB5.9, QSL9 and other mainstream models.
The injector features a dual-valve structure, composed of high-strength stainless steel valve body and wear-resistant ceramic valve core, withstanding 1800bar injection pressure and operating temperature range of -40℃ to 120℃. Its injection accuracy error is ≤2%, response time ≤0.3ms, enabling multi-stage injection control, compatible with original ECU systems, requiring no additional debugging after installation, with a normal service life of over 10,000 hours.
As a professional supplier, Ningbo Qiuning Trading Co., Ltd. provides both original and aftermarket 4903472 injectors. Original products strictly follow Cummins ISO/TS 16949 standards, passing 2000 high-pressure pulse tests, suitable for commercial vehicles with extremely high injection accuracy requirements; Aftermarket products undergo third-party flow testing, with injection performance consistency of 90% with the original, priced at 55%-65% of the original, meeting the reliable use needs of budget-conscious customers.
We have sufficient inventory, supporting global delivery within 72 hours, and our technical team can provide injection pressure calibration guidance and compatible model inquiry. It is recommended to regularly check injector tightness to avoid power loss due to leakage. Welcome to consult and purchase:
WeChat/WhatsApp：+8615888032469
KTA19-G3，KTA19-G4，VTA28-G5，VTA28-G6，KTA38-G5，KTA38-G9，KTA50-G3，KTA50-G8，QSK60-G3，QSK60-G4
4B3.9-G1,4BT3.9-G1,4BTA3.9-G2,6BT5.9-G1,6BTA5.9-G2,6CTA8.3-G2,6CTA8.3-G3,6LTAA8.9-G2
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46KVA 4BTA3.9-G1-60Hz
