original 4P-9076 Fuel Injector for 3508 3512 Engine 777B 789 Mining Dump Truck Replacement for OEM 0R-2921 new injector original new original new injector

The 3512A Fuel Injector 4P-9076 is engineered as a direct-fit replacement for 3508, 3512, 3512A, 3512B, 3516, and 3516B diesel engines used across generator sets, marine propulsion systems, and heavy industrial power units. With authorized cross references including 0R-9076, 0R2921, OR2921, 7E3382, 9Y1785, 0R2836, CA4P9076, CAT4P9076, CAT3512INJECTOR, CAT3508INJECTOR, and CAT3516INJECTOR, this injector delivers OEM-equivalent fitment for equipment such as the D11N, D11R, 777B, 777C, 785, 789, 992C, 992D, and 994 mining trucks, alongside -powered generator sets and marine engines.

Manufactured to original specifications, the 4P-9076 fuel injector features precision nozzle geometry, OEM-calibrated fuel flow rates, and heavy-duty corrosion-resistant construction. Each unit is 100% performance tested to verify spray pattern integrity, opening pressure, and atomization quality, ensuring stable power generation, reduced smoke emissions, improved fuel economy, and reliable cold-start performance under demanding field conditions. The robust internal components and hardened nozzle tip extend overall service life while maintaining consistent injection timing across the full operating range of the 3512A engine platform.

Routine maintenance recommendations include using clean diesel fuel, replacing fuel filters at scheduled intervals, monitoring injector performance through balance and flow testing, inspecting for fuel contamination, checking exhaust conditions, and performing periodic nozzle spray pattern inspection. Common diagnostic indicators such as black smoke, hard starting, and excessive fuel consumption can typically be traced to worn nozzle tips, incorrect spray patterns, or internal injector wear, all of which can be confirmed through injector bench testing, fuel pressure verification, cylinder cut-out testing, and engine compression checks before replacement of the defective injector assembly.