Caterpillar original  20R-1268 High Pressure Fuel Injector Nozzle for 3508 3512 3516 C3500B Engine Marine Diesel  original new injector

The CAT 20R-1268 Fuel Injector is an original Caterpillar OEM component engineered specifically for the 3500 series diesel engine family, including the CAT 3512B, 3512, 3508, 3508B, 3516, and 3516B platforms. Manufactured according to Caterpillar engineering tolerances, this unit injector delivers precise high-pressure fuel delivery required for heavy-duty continuous duty industrial operations. It is fully interchangeable with authorized part numbers 20R-1268, 20R1268, CA20R1268, 392-0204, 3920204, CA3920204, 172-4675, 386-1756, 250-1304, 229-0200, 133-3345, 10R-1278, and 10R-1255, providing direct replacement capability across approved Caterpillar injector applications.

Featuring optimized nozzle geometry and high-strength alloy steel construction, the injector ensures a superior spray pattern that promotes complete combustion under demanding operating conditions. Its corrosion-protected design makes it suitable for marine and offshore environments, while thermal stability characteristics maintain consistent performance across extreme temperature ranges. The V12 electronic injection configuration supports turbocharged, water-cooled systems used in generator sets, marine propulsion, oilfield equipment, mining machinery, pump drives, and data center backup power installations.

The injector offers measurable operational benefits including increased combustion efficiency, improved fuel economy, reduced exhaust emissions, faster throttle response, better load acceptance, and minimized carbon deposits. Routine maintenance practices recommend using high-quality diesel fuel, regular filter replacement, and adherence to Caterpillar maintenance schedules to maximize service life. Installation follows OEM procedures including bore cleaning, seal replacement, specified torque application, fuel system priming, and post-installation leak inspection to verify proper engine performance.