Caterpillar original C7 C9 Diesel Engine Common Rail Fuel Injector 243-4502, Fuel Injector 268-1835, Diesel Injector 241-3400, Excavator Parts Replacement for OEM 263-8218 original new injector

The Caterpillar (CAT) 243-4502 fuel injector is a precision-engineered electronic unit injector (EUI) purpose-built for Caterpillar C7 and C7 ACERT diesel engines across heavy-duty industrial sectors. Built to strict original OEM specifications, it delivers consistent, reliable performance for equipment deployed in construction, mining, transportation, marine, industrial power generation, and agricultural operations, reducing risks of unplanned downtime caused by ill-fitting aftermarket replacement components.

Constructed from heat-treated alloy steel with a precision-machined injector nozzle and heavy-duty internal valve components, the 243-4502 maintains stable fuel flow, accurate atomization, and precisely controlled injection timing even under continuous load and extreme environmental conditions. Every unit undergoes 100% fuel flow and leak testing prior to release, supporting optimized combustion efficiency, lower fuel consumption, reduced exhaust emissions, and extended engine service life, with enhanced fuel contamination resistance to minimize premature wear.

It is compatible with a broad range of Caterpillar equipment including excavators, wheel loaders, motor graders, generator sets, and marine power units, with cross-reference numbers 10R-7224, 253-0618, 387-9433, and 328-2585 for simplified part matching. Backed by a 12-month warranty, buyers are advised to verify fitment via engine serial number and emissions configuration before ordering, as cross-reference applicability varies based on specific engine build specifications.