Denso original Common Rail Fuel Injector 295050-1520 8-98139816-3 for 4HK1 6HK1 Diesel Engine ZX250-5A Excavator Machinery Parts Replacement original new injector

The DENSO 295050-1520 common rail diesel fuel injector is engineered as a direct OE-type replacement for ISUZU 4HK1 and 6HK1 common rail diesel engines. It carries authorized OE number 8-98243863-0 / 8982438630, with verified cross references including 2950501520, 8-98139816-3, 8981398163, 8-98240293-0, 8982402930, 295050-8630, 2950508630, 095000-1521, and 0950001521, ensuring accurate part-number matching for distributors, workshops, and export parts suppliers searching ISUZU 2 series components.

Designed for ISUZU trucks, ISUZU industrial engines, and the Hitachi ZX250-5A excavator, this injector covers a wide range of commercial vehicle, construction machinery, wheel loader, and engine overhaul applications. The DENSO high-pressure common rail construction delivers precise ECU-controlled injection and fine atomization, supporting consistent combustion, stable rail pressure, and reliable performance under heavy load conditions in both on-road fleet and off-road equipment environments.

Routine maintenance requires clean diesel fuel, regular fuel filter replacement, water separator service, and fuel tank cleaning to control common rail contamination. During diagnostic work, technicians should perform return-flow testing, rail-pressure diagnosis, injector coding confirmation, ECU scanning, and professional bench testing to address symptoms such as hard starting, rough idle, black or white smoke, power loss, high fuel consumption, misfire, and frequent DPF regeneration. Wiring inspection and aftertreatment system diagnosis are also recommended for long-term reliability.