Caterpillar original Diesel Common Rail Injector 387-9441, 217-2570, 20R-9079, 20R-8066, Compatible with Caterpillar C7 C9, OEM Replacement original new injector

Engineered for Caterpillar C7 Series diesel platforms, the 387-9441 (alternatively formatted 3879441) is an original Caterpillar (CAT) Injector GP purpose-built for industrial engine fuel delivery systems. As an original-spec diesel fuel injector, it adheres to Caterpillar’s component design requirements to meter fuel, regulate injection timing, support fuel atomization and enable stable combustion control. Public parts listings occasionally link the part family to C7 marine and C9 engine applications, but these use cases require additional fitment confirmation.

The 387-9441 injector family has a wide range of widely published cross-reference numbers to support B2B parts sourcing by OE number, reman part code or aftermarket interchange identifier. Validated related numbers include official Cat Reman part 20R-8067/20R8067, plus replacement cross codes 10R-7226, 328-2587, 295-9166, 280-4174, 10R4761 and 10R7223. Because Caterpillar injectors are serial-number-sensitive, buyers must confirm fitment via engine serial number, original injector tag, machine arrangement number and official service data before placing orders.

The injector is available as an original new replacement unit, with remanufactured, rebuilt and exchange options also accessible to meet different operational and budget requirements. It is suitable for diesel engine fuel system repair, routine replacement and full engine overhaul projects, addressing common fault scenarios including rough idle, hard starting, abnormal exhaust smoke, misfire and excessive fuel consumption for verified C7 engine applications.