Caterpillar original  2OR-1276 Diesel Engine Parts Fuel Injector for 3512B Engine 386-1767 392-0208 386-1760 Replacement for OEM Construction original new injector

The CAT 3512B series fuel injector 2OR-1276 is engineered as a high-performance OE replacement component for heavy-duty industrial and marine diesel engines. Designed for direct compatibility with CAT 3512B, 3516, and 3520 engines, this injector delivers precision direct fuel injection with optimized spray patterns calibrated specifically for CAT 3512B series combustion chambers. The unit supports power outputs ranging from 1015–1500 kW (3512B), 1200–2000 kW (3516), and 1800–2500 kW (3520), ensuring consistent performance across demanding applications such as power generation, mining, marine propulsion, construction, and oil and gas operations.

Manufactured from high-grade alloy steel with heat-treated components, the 2OR-1276 injector features an anti-wear coating, corrosion-resistant surfaces, and a high-precision nozzle engineered to withstand maximum pressures of 1800–2200 bar. It maintains a flow rate of ~50–60 L/h at 2000 RPM and operates reliably within a temperature range of -40°C to 120°C. OEM-standard mounting dimensions allow for direct replacement without modification, and the injector ships in anti-static protective packaging with tracked, insured worldwide delivery.

For maintenance, inspection is recommended every 500–1000 hours, with approved solvents and ultrasonic cleaning used for nozzle service. O-rings and sealing washers should be replaced during routine service, and engine ECU codes, fuel flow rate, and spray pattern should be monitored for diagnostics. Backed by a 12-month / 1000-hour warranty, this 2OR-1276 injector provides dependable performance for global industrial fleets.