Caterpillar original 171-9704 High Performance Diesel Engine Fuel Injector 20R-5392 Replacement for Caterpillar 3412 3408 Engine, for heavy duty diesel engine application original new injector

Precision-engineered for Caterpillar’s 3412 engine platform, the 171-9704 diesel fuel injector is a direct-injection fuel system assembly manufactured to strict OEM-equivalent specifications for severe-duty use. This new injector is fully compatible with all CAT 3412 series variants, including 3412B, 3412C, 3412 DITA, and marine, generator, and industrial 3412 engine configurations. It holds ISO quality system certification, and buyers are advised to verify the latest OEM supersession records before ordering to confirm proper fitment.

As a high-precision fuel metering component, the 171-9704 operates within the diesel fuel injection system to deliver accurately pressurized, atomized fuel directly into the combustion chamber. Its calibrated needle valve opens only at the pre-set pressure threshold, ensuring consistent injection timing and an optimized fuel spray pattern. This controlled combustion process delivers measurable operational benefits, including improved fuel efficiency, higher power output, reduced exhaust emissions, stable engine performance, and enhanced cold-start capability for reliable operation in variable conditions.

Constructed with hardened wear components and corrosion-resistant materials, the injector offers extended service life and reduced maintenance needs for harsh operating environments. It supports heavy-duty use cases across mining, marine transportation, oil and gas operations, construction, power generation, and industrial manufacturing sectors, including generator sets, marine vessels, mining equipment, and oilfield machinery. It comes with a 12-month warranty, neutral or customized packaging, and a 1-piece minimum order quantity for flexible B2B purchasing.