Caterpillar original  392-9046 Diesel Engine Fuel Injector for C9.3 Excavator 336E 336EL 336ELN Replacement 304-3637 382-0709 456-3493 20R-5036 original new injector

The Caterpillar C9.3 fuel injector 392-9046 is an original-type common rail diesel injector engineered for CAT C9.3, C9.3 ACERT, C9.3B, C9.3 Marine, and C9.3 generator-set engine platforms. Designed to deliver diesel fuel into the combustion chamber through a precisely controlled high-pressure spray pattern, this injector works in coordination with the engine ECM and high-pressure fuel system to support accurate air-fuel mixing, improved combustion efficiency, controlled power output, and reduced smoke and emissions across demanding operating conditions.

Manufactured with industrial-grade metallurgy and balanced flow performance, injector 392-9046 supports fuel economy, emissions compliance, and electronic injection compatibility. It is a direct OE replacement option cross-referenced with 304-3637, 324-5467, 342-5487, 363-0493, 364-8024, 367-4293, 382-0709, 417-3013, 456-3493, 456-3509, 456-3544, 456-3545, 456-3579, 456-3589, 171-9704, 196-1401, 222-5966, 20R-5077, 20R-5078, 20R-5079, 20R-5036, 20R-5073, 20R-5075, and 460-8213, enabling fast identification for reman, exchange, and aftermarket distribution channels serving global heavy equipment fleets.

Suitable for CAT 336E and 336F excavators, large hydraulic excavators, construction machinery, industrial power units, diesel generator sets, marine propulsion and auxiliary engines, mining support equipment, oil and gas power modules, forestry machinery, and material handling equipment, this heavy-duty injector offers strong global parts availability. Proper installation requires confirmation of part number, engine serial number, engine arrangement, emissions configuration, and ECM requirements, along with clean fuel supply, filter replacement, correct seating, official torque values, injector trim coding, and post-installation leak, start-up, smoke, and diagnostic code inspection.