Perkins original  10R-1275 Fuel Injector for Caterpillar 3512B 3516B 3508B Diesel Engine 793C 793D Spare Part 20R-3477 10R-1279 original new injector

The Perkins 10R-1275 fuel injector is an authentic replacement component engineered for the Perkins 3500 series diesel engine platform, including the 3512B, 3516B, and 3508B configurations. As an authorized OE part carrying the primary number 10R-1275, this unit injector also cross-references directly with 127-8222 and 0R-8477, allowing seamless substitution across fleet inventories and service operations. It is further validated for installation on the 3512C, 3516C, and 3508C engine families, supporting generator sets, marine propulsion units, mining trucks, oilfield power modules, industrial power units, power plants, offshore platforms, locomotive auxiliary power systems, and heavy duty construction equipment.

Manufactured to OEM calibrated specifications, the 10R-1275 incorporates precision nozzle technology that delivers high-pressure injection capability with stable fuel atomization. Heat-resistant and corrosion-resistant materials are used throughout the assembly, ensuring long operational lifespan under demanding industrial and marine duty cycles. Stable engine performance and reduced fuel consumption are achieved through consistent injection timing, uniform fuel flow rates, and reliable response from the integrated solenoid assembly, all of which contribute to lower exhaust temperatures and improved combustion efficiency.

During installation, technicians should use new sealing components, clean the injector bore thoroughly, and follow Perkins torque specifications to ensure proper seating. After fitting the 10R-1275 injector, the ECM should be verified, an injector balance test performed, and fuel pressure confirmed before engine startup. Clean diesel fuel, regular fuel filter replacement, periodic injector testing, and avoidance of water contamination will further extend the service life of the unit.