Caterpillar original Replacement Fuel Injector 373-4087 for C3500B Engine, Common Rail Fuel Injector for 5130B 5230B, Cross Reference 246-1854, 10R-9617, 20R-0848 original new injector

The CAT 373-4087 (also formatted as 3734087) is a specification-matched diesel fuel injector assembly built for Caterpillar 3500 Series heavy-duty diesel engines. Cross-referenced with part numbers 392-0214 and 3920214 in global supplier catalogs, it is compatible with Caterpillar 3508, 3508B, 3512, 3512B, 3516, 3516B and 3520 engine platforms. It serves as a direct-fit replacement for scheduled maintenance and unexpected repair of CAT fuel systems.

Precision-engineered for reliable fuel delivery, the injector meters exact fuel quantities to each cylinder and atomizes fuel into ultra-fine droplets for complete, consistent combustion. These traits improve fuel utilization efficiency, lower particulate matter and NOx emissions, and maintain stable combustion pressure to preserve rated engine power. Its industrial-grade wear-resistant construction delivers long service life, with corrosion and high-temperature resistance built for continuous heavy-load operation.

Validated for severe-duty use, the 373-4087 supports applications across mining, marine propulsion, offshore energy, oil and gas, industrial power generation, emergency standby power, construction and heavy industrial manufacturing. It is a reliable replacement for fleet operators, maintenance providers and parts distributors seeking to reduce unplanned downtime and extend 3500 Series engine service life, with consistent OEM-equivalent performance in demanding environments.