Caterpillar original 4 w-3563 - Fuel Injector for 3512A Power Engine, for heavy duty diesel engine application, 4W-3563 Replacement Part, Compatible with Crane Machine original new injector

Sourced for industrial diesel engine maintenance and replacement workflows, the Caterpillar CAT 3512A Series 4W-3563 fuel injector is a purpose-built heavy-duty component for large industrial engine platforms. Cataloged under primary OE number 4W-3563 (alternatively written as 4W3563, 4 W-3563 or 4W 3563), it also matches cross-reference numbers 7C-0345 and 7C0345 in aftermarket and industrial parts databases. It is engineered to fit Caterpillar 3512A and 3500A series diesel engines, including the 51.8L V12 3512 platform with industrial power ratings of 761–1119 kW (1020–1500 bhp).

This diesel injector assembly operates by metering precise volumes of diesel fuel, atomizing it into a fine spray, and delivering it into engine cylinders per combustion requirements. Functional units support smooth engine starting, even operation, stable power output and reduced abnormal exhaust smoke. Built for extended industrial service, it features precision machining, controlled fuel delivery, optimized spray patterns and wear-resistant construction to withstand the demands of large high-displacement diesel engines.

It supports a wide range of heavy-duty equipment, including generator sets, marine diesel engines, mining machinery, cranes, construction equipment, oilfield power systems, industrial pump engines and stationary power units, serving maintenance, repair and parts teams across power generation, marine, mining, construction and oilfield sectors. Buyers must verify the part number against engine serial, arrangement and original injector numbers before ordering, and follow official service manual torque specifications during installation to prevent operational faults.