博世共轨喷油器 0445120238 康明斯发动机燃油喷射器 原厂品质

When Cummins engine exhibits rough idle, weak acceleration, black smoke from exhaust, or rising fuel consumption, the common-rail injector is likely worn or carbon-choked due to long-term high-pressure operation, causing poor atomization. This Bosch common-rail injector (part no. 0445120238) precisely controls fuel injection during normal operation to ensure complete air-fuel combustion, maintaining engine power output and emission compliance. Fits Cummins Dodge series; compatible with OEM numbers 0445120238, 0445120103, 3968158, 445120208, 4940051, 5135790AC/AD/AF, 986435505, R5135780AD/R5135790AB, etc. Before installation, clean the mount holes and replace sealing washers; tighten with a torque wrench per factory torque to avoid over-tightening causing valve body distortion or seal failure.