Perkins original Perkins 418-8820 Diesel Marine Fuel Injector 111-3718 224-9090 422-1144 7E-6408 Replacement for OEM 20R4179  original new injector

The Perkins 418-8820 / 4188820 unit injection pump group is engineered for the Perkins 3116 series diesel engine, delivering OE-style fitment and reliable high-pressure fuel injection performance. This injector receives fuel from the supply circuit, meters the correct fuel quantity, builds injection pressure, delivers fuel at precise timing, atomizes the charge into the combustion chamber, seals the fuel circuit and resets for the next engine cycle. It is designed for engine rebuilders, diesel repair shops, machinery owners and distributors who need a searchable replacement injector backed by multiple OE, reman and cross-reference numbers.

This part is widely cross-referenced under authorized numbers including 20R-4179, 224-9090, 184-2527, 137-4729, 7E-5645, 7C-3854, 6I-4401, 20R-1923, 10R-1252, 0R-8575, 0R-3815, 0R-6130, 0R-5510 and 0R-0471, giving buyers a strong database for sourcing, identification and inventory matching. Typical applications include excavators, wheel loaders, bulldozers, motor graders, generator sets, industrial power units, commercial trucks, marine auxiliary engines, off-road equipment and mining equipment, provided the Perkins engine model and existing injector number are confirmed. Fitment should always be verified by part number, engine serial number, engine arrangement number and service manual data.

Proper maintenance is essential for long injector service life. Operators should keep fuel clean, replace fuel filters on time, drain water separators regularly, avoid fuel contamination and inspect the injector whenever the engine shows hard starting, rough idle, black smoke, white smoke, knocking, power loss or high fuel consumption. A full diagnosis should also check fuel pressure, fuel pump operation, compression, injection timing, turbocharger and air intake before replacing the injector.