Caterpillar original Caterpillar 3508 3512 C3500 Diesel Engine Fuel Injector 20R-1276 392-0215 for Construction Excavator, Cross Reference 20R-1282, Replacement for OEM 20R-1270 original new injector

Purpose-engineered for demanding Caterpillar heavy-duty engine platforms, the genuine CAT 20R-1276 fuel injector delivers precision fuel delivery performance for 3508B, 3512B and 3516B diesel engine models. Built to OEM specifications, this industrial-grade component supports cross-referencing with a full database of globally recognized alternate part numbers, eliminating matching errors for MRO teams, equipment fleet operators and industrial parts distributors sourcing replacement components for scheduled overhauls or emergency repairs.

As an electronically controlled high-pressure diesel injector, it uses ECU-triggered solenoid actuation to meter fuel at exact ignition timing, atomize fuel through a precision nozzle, and deliver optimized spray patterns into the combustion chamber. This design enables complete, efficient combustion, supporting consistent torque output, reduced unburnt fuel and exhaust smoke, controlled emissions, and reliable throttle response even under sustained heavy load cycles, with rugged construction to withstand harsh operating conditions.

It is compatible with a wide range of heavy-duty assets including standby and prime power gensets, commercial marine vessels, mining equipment, oil and gas power systems, and large construction machinery. It follows standard OEM installation procedures, and routine maintenance with clean OEM-spec diesel, regular fuel filter changes and periodic spray pattern inspections reduces unplanned downtime, making it a dependable replacement solution for global industrial operations.