Caterpillar original 1OR-0955 C15 Fuel Injector Replacement for OEM 239-4909 280-0574 1OR-1000 Diesel Engine Parts for Construction Machinery original new injector

The CAT 10R-0955 electronic unit injector is engineered as a direct OEM-style replacement for Caterpillar C15, C-15, C15 ACERT, 3406E, C16, C-16, and 3456 diesel platforms. Designed for heavy-duty commercial and industrial use, it delivers precise fuel metering through electronically controlled unit injection, supporting stable combustion, efficient atomization, and reliable cold-start performance across a wide operating range. Compatible cross references include 1OR-0955, 0R-9803, OR9803, 10R-1268, 10R0955R, R-10R0955, 211-3025, 191-3005, 176-1150, EX630955, 10R0955RX, FS10R0955, 20R-0056, 20R-1927, 20R-1930, 148-012-0027, 170-5252, 203-7685, 350-7555, P248699A, 239-4909, 280-0574, 356-1367, 359-7434, and 20R-2284, allowing flexible substitution across mixed fleets and reman inventory programs. The injector is suitable for C-15 and C16 truck engines, 3456 and 3406E generator sets, C-15 industrial and petroleum engines, and machines such as the 385B excavator, 988G and 980G wheel loaders, D8R and D8N track-type tractors, AD30 underground truck, R2900G and R2900 load haul dumps, 627E, 623B, 627F, and 651B wheel tractors, 825G II and 825C soil compactors, 834G and 824G II wheel dozers, 836G and 826C landfill compactors, D350E II and D400E II articulated trucks, 5090B front shovel, and Challenger MTC855, MT845, MTC865, MT835, and MT865 equipment. Built with heavy-duty internal components, it withstands high injection pressures and prolonged duty cycles typical of mining, construction, oilfield, and power generation applications. Routine maintenance using clean diesel, timely filter replacement, water separator draining, and periodic ECM code scanning helps preserve injector performance. Supplied as a single unit or a matched 6-piece set, the 10R-0955 offers global aftermarket availability with core return options for reman exchange.