Caterpillar original Caterpillar 7E-3383 fuel injector assembly for 3306 engine spare part replacement for OEM new injector original new injector

The Caterpillar 7E-3383 fuel injector is a high-pressure diesel fuel injection assembly engineered as a direct OEM replacement for CAT 3512A diesel engines and related engine platforms including 3512, 3512B, 3512C, 3516, 3516B, and 3516C. The injector nozzle is manufactured with micron-level precision tolerances to achieve superior fuel atomization, ensuring consistent spray patterns that improve combustion efficiency and reduce fuel waste across continuous heavy-duty operation.

Constructed from heat-treated alloy steel with a protective surface treatment, the 7E-3383 injector delivers long-term durability, corrosion resistance against fuel contamination, and reliable high-temperature performance in demanding industrial environments. It functions as the final fuel delivery component in the Caterpillar electronic unit injector system, executing the fuel supply, pressure build-up, needle lift, atomization, combustion, and injection completion stages. Cross reference numbers 330-3383, 3303383, 7E-3383A, 7E-3383B, and 7E-3383C support broad interchangeability for replacement requirements.

The injector is widely applied in generator sets, marine propulsion engines, mining equipment, construction machinery, and oil and gas industry equipment such as drilling rigs and pipeline stations. Each unit is brand new, backed by a 12-month warranty, and manufactured to OEM fitment standards for straightforward installation and dependable service life in power generation, marine, mining, and oilfield applications.