Caterpillar original 0R-9944 Diesel Fuel Injector Replacement for OEM 246-1854 10R-7238 245-8272 10R-8795 3508B 3516B 3406E 3512B Excavator new original new injector

The Caterpillar 3512B fuel injector 0R-9944 is a precision-engineered direct injection component designed for heavy-duty diesel engine operations. Built with high-strength alloy steel and an anti-corrosion, wear-resistant coating, this injector delivers consistent spray patterns and stable performance under high-pressure conditions reaching 2000–2500 bar. It serves as a direct OEM-equivalent replacement for 0R9944, 238-7323, and 10R-7555, ensuring seamless fitment and reliable function across demanding industrial environments.

Engineered for long service life, this fuel injector operates effectively within a temperature range of -40°C to 120°C, with a flow rate of 300–350 ml/min at 2000 bar and a spray angle of 155° ± 5°. The nozzle configuration is available in single-hole or multi-hole designs depending on specific application requirements. Weighing 1.2 kg, the unit features bolt-on installation following OEM torque specifications of 35–45 Nm, simplifying replacement procedures for maintenance teams.

This injector is widely applied in power plants, generator sets, offshore and onshore vessels, mining trucks, drilling rigs, and various industrial manufacturing engines. Proper maintenance includes inspection every 500 operating hours, regular fuel filter cleaning, seal integrity checks, and monitoring for early signs of clogging or pressure drop. Manufactured under ISO9001 quality standards, the 0R-9944 fuel injector provides dependable fuel delivery, supporting optimal combustion efficiency and reduced downtime for CAT 3512B engines operating in power generation, marine, oil and gas, mining, and construction sectors.