Caterpillar original 20R-1268 386-1769 20R-1278 20R-1266 Fuel Injector High Performance Diesel OEM Replacement Marine Engine High Pressure Fuel Nozzle original new injector

The Caterpillar 20R-1268 Fuel Injector Assembly is an original OEM diesel injection component engineered for the Caterpillar 3500 Series engine platform, including the 3512B, 3512, 3508, 3508B, 3516, and 3516B. As a precision fuel metering device, it delivers atomized diesel into the combustion chamber at the correct pressure, quantity, and timing, with injection electronically controlled by the ECM. The injector is associated with Fuel Injector GP 392-0204 and replacement numbers 172-4675, 386-1756, 250-1304, 229-0200, 133-3345, 10R-1278, and 10R-1255.

Manufactured according to Caterpillar engineering tolerances, the 20R-1268 combines high-pressure injection capability with optimized nozzle geometry for a superior spray pattern and complete combustion. Wear-resistant, high-strength alloy steel components and corrosion protection support long service life in marine and offshore environments, while thermal stability maintains performance under extreme operating temperatures. The result is increased combustion efficiency, improved fuel economy, reduced exhaust emissions, faster throttle response, better load acceptance, and reduced carbon deposits across thousands of operating hours.

As a direct OEM replacement for approved Caterpillar applications, the 20R-1268 serves generator sets, marine vessels, tugboats, offshore platforms, mining equipment, pump drives, compressor systems, and data center backup power. It supports turbocharged, water-cooled 3500 Series engines with electronic injection in continuous-duty industrial service. For distributors, fleet operators, and maintenance providers, this injector offers verified cross-reference coverage and OEM-grade quality for power generation, marine propulsion, mining, and oil & gas applications worldwide.