Caterpillar original 7C-4174 Common Rail Fuel Injector Assembly for 3500A 3508 3512 3516 Excavator Replacement for OEM original new injector

The Caterpillar CAT 3512A fuel injector 7C-4174 is an OEM-grade high pressure diesel fuel injector engineered for CAT 3512 and 3512A engine platforms. Manufactured from high-strength alloy steel, it delivers precision fuel metering, optimal atomization, and peak combustion efficiency across demanding operating environments. The injector is fully compatible with multiple OEM and cross reference part numbers, making it a direct-fit replacement for service, overhaul, and field replacement applications in power generation, marine propulsion, mining, oil and gas, and heavy industrial equipment.

Every unit is 100% flow and spray tested to ensure it meets or exceeds factory specifications, providing long-term reliability and consistent engine performance. The high pressure mechanical injection design supports stable rail pressures and accurate fuel delivery, which helps reduce smoke output, lower fuel consumption, and maintain rated horsepower under continuous load. Available in both new and remanufactured conditions, the injector is suitable for generator sets, marine vessels, offshore platforms, mining trucks, oil and gas rigs, and general industrial machinery powered by CAT 3512 and 3512A engines.

To maximize service life, operators should use ultra-low sulfur diesel (ULSD), replace fuel filters regularly, prevent water contamination, monitor exhaust smoke, and periodically test injector performance. Backed by a 12-month standard warranty and supplied in industrial export or customized packaging, the 7C-4174 fuel injector offers a dependable, cost-effective solution for distributors, service shops, and end users maintaining CAT 3512A series engines worldwide.