original 328-2587 387-9441 20R-9079 Diesel Injector for C7 C9 Marine Engine new injector original new injector

Engineered as an OEM-type replacement for the C7 diesel platform, this common rail fuel injector is built around OE number 328-2587 and cross-references 20R-8067 and 387-9441, covering authorised part numbers 328-2584, 328-2585, 328-2582, 328-2586, 387-9426, 387-9427, 387-9428, and 387-9429. It is designed to deliver metered diesel fuel into the combustion chamber at the correct timing, pressure, and spray pattern, supporting precision fuel metering, stable injection quantity, and consistent cylinder output on C7 engines used in 950H, 962H, 584, M325D MH, and M325D L MH equipment, with possible E320D and 320D excavator fitments when a compatible C7 is installed.

The injector assembly is suited to heavy-duty construction, industrial, truck, marine, and fleet maintenance environments, helping optimise combustion efficiency, power output, and fuel economy while reducing rough idle, hesitation, and cylinder imbalance caused by worn original units. C9 engine compatibility must always be verified by engine serial number and original injector number, and marine rating, serial number, and calibration must be checked before supply. Each unit is individually bench tested for leakage, spray pattern, response, and return flow, then sealed and capped for clean storage and shipping.

For reliable operation, operators should use clean diesel fuel meeting engine requirements, replace fuel filters at recommended intervals, drain the water separator regularly, keep the fuel tank free from sediment and water, and inspect the electrical harness and connectors. During diagnosis, return flow testing, cylinder cut-out testing, and checks for fuel dilution in engine oil help identify weak or over-fueling injectors. The SKU is database-ready for Shopify, WooCommerce, Alibaba, independent B2B websites, ERP systems, and PIM systems, making it a practical sourcing option for distributors, repair shops, and fleet maintenance programmes.