Caterpillar original For C3500B Engine Common Rail Injectors 20R-1262 Suitable for Excavator and Truck Replacement for OEM 10R-2826 Cross Reference 437-7547, 10R-2827 original new injector

For equipment operators relying on CAT 3512B power units, a matching fuel injector is essential to preserve engine stability across harsh operating conditions. The Caterpillar 20R-1262 diesel fuel injector assembly is engineered exclusively for the CAT 3512B engine series, covering 3512B HD, marine, generator and industrial variants. Built to strict Caterpillar OEM specifications with ISO-certified manufacturing, it is available in new or remanufactured conditions with a 12-month warranty, and carries cross reference number 10R-0955 (10R0955) for industrial, marine, mining, oil & gas and power generation use.

As a core diesel fuel injection system component, the 20R-1262 injector meters high-pressure fuel and atomizes it into fine droplets to optimize air-fuel mixing. This boosts combustion efficiency, raises power output, lowers fuel consumption, reduces exhaust emissions, improves cold-start performance and extends engine service life. Its industrial-grade build features a precision nozzle, high-pressure resistance, corrosion-resistant construction, heat-treated internals, balanced fuel flow and leak-tested structure for reliable heavy-duty operation.

For installation, follow Caterpillar service manual torque specs, inspect fuel lines, clean seating surfaces, use new seals and washers, and bleed the full fuel system before verification. Routine maintenance requires clean diesel, regular filter replacement, exhaust smoke monitoring and fuel pressure checks, plus injector calibration at major service intervals. Common issues like hard starting, abnormal smoke, power loss and rough running can be diagnosed via targeted injector tests.