original 2934573 Diesel Fuel Injector Assembly for C7 Engine 324D 325D 330D 336D Excavator Parts 293-4574 Replacement for OEM new original new injector

Engineered specifically as a direct replacement injector for the C7 series diesel engine platform, the 293-4573 fuel injector delivers precise fuel metering and fine atomization to support efficient combustion in heavy-duty operating conditions. Its HEUI type design is matched to the original C7 engine calibration parameters, restoring stable idle quality, recovering rated power output, and improving overall combustion characteristics for demanding industrial and mobile applications. This injector is widely deployed across excavators, wheel loaders, bulldozers, trucks, buses, generator sets, marine auxiliary engines, agricultural machinery, mining equipment, and stationary industrial power units utilizing the C7 powerplant. Selected aftermarket references also indicate compatibility with C7 / C9 engine applications, broadening its service utility within mixed commercial fleets.

The unit is built to original type specification and cross-references multiple OE part numbers, including 10R-4763, 20R-8059, 20R-8057, 243-4503, 295-1411, 268-9577, 20R-8071, and CA2934573, allowing distributors, fleet operators, and service workshops to consolidate inventory using a single SKU that covers several catalog references. This multi-number compatibility simplifies procurement for B2B buyers managing C7 engine rebuilds, scheduled overhauls, and field service replacements. Installation follows a direct-fit procedure with no additional modification required, and the injector integrates with the existing ECM fuel mapping and return circuit for straightforward commissioning on the C7 diesel engine.

Routine maintenance of the 293-4573 injector is essential to preserve its metering accuracy and service life. Operators should always use clean diesel fuel, replace fuel filters on schedule, drain the water separator regularly, and keep the fuel tank free from contamination. Maintaining engine oil quality and periodic ECM fault code scanning will help identify injector performance deviations early. When symptoms such as hard starting, rough idle, black smoke, white smoke, power loss, high fuel consumption, engine knock, misfire, or excessive return fuel appear, technicians should perform fuel pressure testing, return flow testing, cylinder cut-out testing, cylinder balance testing, smoke testing, and injector leak testing to isolate the faulty unit. Unused injectors should be stored in clean, sealed packaging to prevent nozzle contamination prior to installation.