Caterpillar original Diesel Engine Fuel Injector for Caterpillar C15 C18 C32, 235-1403, cross reference 10R-7228, replacement for OEM 253-0597, 3556110, for Excavator original new injector

Engineered for Caterpillar C18 engine platforms, the 235-1403 diesel fuel injector is a precision-manufactured component built to meet strict Caterpillar OEM dimensional and performance specifications. It is compatible with all verified C18 variants, including the standard C18, C18 ACERT, industrial C18, marine C18 and generator C18, all based on the 18.1-liter inline six-cylinder diesel architecture. As an official Caterpillar part, it meets OEM-equivalent quality standards and includes a 12-month warranty for B2B buyer confidence.

Integrated into the engine’s high-pressure common rail fuel system, the injector operates in lockstep with the engine control module (ECM): the ECM calculates optimal injection timing, activates the injector solenoid, lifts the internal needle valve, and atomizes fuel through precision-machined nozzle holes to produce a fine mist for complete, efficient combustion. This controlled delivery enables precise fuel metering, improved fuel economy, reduced exhaust emissions, enhanced combustion efficiency, stable power output and lower long-term operating costs.

Constructed with industrial-grade materials, hardened wear-resistant internal components and specialized anti-corrosion coatings, the injector is built to withstand extreme fuel system pressures and harsh heavy-duty operating environments. It supports a wide range of equipment across core sectors, including marine vessels, generator sets, mining trucks, drilling rigs, construction machinery, industrial power units and pump drive systems for industrial, marine, mining, power generation and construction use cases.