Caterpillar original Caterpillar 4W-3563 Fuel Injector for 3512A Power Engine Crane Machine Replacement for OEM 6I-4357 new injector original new injector

The Caterpillar CAT 3512A fuel injector, OE number 4W-3563 with cross reference 7C-0345, is engineered as a direct replacement for the CAT 3500A series diesel engines. Designed for the V12 CAT 3512 platform with approximately 51.8 L displacement, 170 mm bore and 190 mm stroke, this injector supports industrial ratings around 761–1119 kW / 1020–1500 bhp at 1200–1800 rpm depending on configuration, ensuring reliable fuel delivery in high-output applications.

Manufactured with precision machining, wear-resistant construction and optimized spray performance, the injector delivers controlled fuel atomization for stable combustion, reduced smoke output and consistent engine response. The assembly is built to match the original equipment dimensions and flow characteristics, allowing straightforward installation on generator sets, marine diesel engines, mining machinery, construction equipment, oilfield power units and industrial pump engines. Export-ready packaging and consistent part number coverage simplify inventory management for B2B distributors, rebuild shops and heavy-duty maintenance operations.

Before installation, operators should verify the engine model, serial number, arrangement number and original injector number, then clean the injector bore, fuel lines and mounting surface. Worn sealing components should be replaced and torque applied per the official service manual. After installation, inspect for fuel leakage, abnormal noise, irregular idle, poor acceleration, excessive smoke or active fault codes, and record the replacement by engine serial number, running hours, installation date and original fault symptom to support long-term fleet maintenance tracking.