Caterpillar original Caterpillar 7C-2239 diesel fuel injector replacement for OEM new injector original new injector

The Caterpillar 3512A fuel injector 7C-2239 is a precision-engineered high-pressure diesel injection component designed for reliable operation in the most demanding industrial environments. Built to exact OEM tolerances, this injector delivers consistent fuel metering and spray pattern performance, ensuring direct OEM fit without the need for modifications during replacement. Its hardened alloy construction provides exceptional resistance to wear, corrosion, and the high thermal stress associated with continuous-duty operation in heavy machinery.

Featuring a multi-hole nozzle optimized for fine fuel atomization, the 7C-2239 injector supports high-pressure fuel delivery of up to 2200 bar, promoting deeper combustion penetration, more complete fuel burn, and reduced exhaust emissions. The injector is engineered for long-term durability under extreme heat and pressure, making it suitable for continuous operation across mining, marine, power generation, and oilfield applications. Each unit is calibrated to maintain stable injection timing and pressure throughout its service life.

As a versatile supply solution, the 7C-2239 cross-references with 4W-3563, 7C-0345, 10R3053, 9Y-0052, 7E-2269, 0R-0906, 0R-175, 7C-4173, 7C-9576, and 7E-6048, providing cost-effective reman and equivalent options for fleet operators and distributors. Compatible with CAT 3512A, 3512B, 3512C, and related industrial variants, this injector ensures broad application coverage. Proper maintenance — including the use of high-quality diesel, regular inspection for leaks and carbon buildup, and recalibration during engine overhauls — will maximize service intervals and operational efficiency.