Caterpillar original Common Rail Fuel Injector 0R-0906, 7E-6408, 9Y-1785, 0R-3051 for Diesel Engine 3500A 3508 3512 Excavator Diesel Parts Engine Assembly Components Replacement original new injector

The Caterpillar 0R-0906 fuel injector — also searched as 0R0906, CAT 0R-0906 and the typing variation OR-0906 — is a diesel fuel-injection component officially classified by Caterpillar as a Cat Reman Fuel Nozzles & Injectors product. Designed for Caterpillar heavy-duty engine fuel systems, it serves 3512A and related 3500-family platforms used in industrial, power-generation and marine service. Caterpillar's parts catalog associates this Reman injector with 7C-4184 and presents it as the available Reman option for the discontinued 7C-9580 injector assembly.
As a core element of the diesel fuel-injection system, the injector delivers and atomizes fuel for the combustion process, directly affecting starting behavior, power output and fuel utilization. Selecting the Cat Reman option gives buyers a Caterpillar-identified replacement path supported by official supersession data rather than unverified cross-references. For rebuilders, generator-service companies, marine-maintenance organizations, mining contractors, equipment distributors and fuel-injection specialists, this means traceable, catalog-based sourcing for 3500 Series maintenance and overhaul programs.
Because Caterpillar publishes no universal compatible-model list for 0R-0906, fitment must be confirmed against the engine serial number, arrangement number, the injector removed from the engine and Caterpillar parts documentation; unrelated 3500-series injector numbers should never be treated as interchangeable. Catalog dimensions — approximately 312.4 mm (12.3 in) long and 121.9 mm (4.8 in) in height and width — serve as identification and logistics references. Providing 3512A application, serial prefix, arrangement number and original injector number ensures accurate, first-time-right ordering.