Caterpillar original Fuel Injector 1OR-1000 Replacement for OEM 253-0619 Cross Reference 10R-3264 Fits C15 Engine for Excavator and Truck 229-5919 Auto Parts original new injector

For B2B buyers including diesel parts distributors, fleet operators and heavy equipment maintenance teams, the CAT 10R-1000 is a heavy-duty remanufactured diesel fuel injector engineered for Caterpillar C15, C-15 and 3406E diesel engines. Cross-referenced by part numbers including 229-5919, 223-5329 and EX635919, it supports equipment spanning heavy-duty trucks, construction machinery, industrial power units, marine diesel applications, generator sets and mining/oilfield support equipment. All fitment must be verified via engine serial number, original injector tag, ECM calibration and machine model before order confirmation, with C15 ACERT applications requiring additional validation.

As a precision fuel metering component installed in the engine cylinder head fuel injection system, the 10R-1000 receives diesel from the engine fuel supply system, meters exact fuel quantities, triggers injection at calibrated timing, atomizes fuel into fine particles and delivers it to the combustion chamber while controlling internal leakage. Cat Reman units are developed specifically for Caterpillar engines and compatible with modern low-sulfur, low-lubricity diesel fuels, delivering stable fuel supply, optimized combustion, restored power, reduced smoke, improved throttle response and smoother idle performance.

Built to OEM-style fitment standards with heavy-duty construction and validated performance, the 10R-1000 is available as a tested replacement or remanufactured unit, sold individually or as a set of 6 injectors for multi-unit replacement needs. A common search variant uses the letter "O" in place of zero (1OR-1000), but all order validation references official part and engine identification data to eliminate misordering risk for commercial procurement.