original 0R-3422 Diesel Fuel Injection Pencil Injector Nozzle for 3406 3406B 3408 3412 Engine 988B 988F 992C 992D Wheel Loader Excavator original new injector

Engineered for demanding heavy-duty diesel operations, the 0R-3422 Fuel Injector Nozzle delivers precision fuel metering and dependable spray atomization for the 3406B, 3406C, 3408, 3408B, 3408C, 3412, and 3412C engine platforms. Manufactured from hardened alloy steel to OEM dimensional accuracy, this nozzle cross-references with 4W-7018, 4W-7012, 4W-3619, 5Y-7018, and 0R-1745, giving fleet operators, rebuilders, and industrial distributors a reliable direct-fit replacement option.

Built for high-temperature resistance and long operational lifespan, the 0R-3422 injector nozzle supports improved fuel economy, better combustion efficiency, reduced smoke emissions, faster cold starting, and increased engine power output. Its stable spray pattern consistency and superior wear resistance make it well suited to wheel loaders (988B, 988F, 990, 992C, 992D), bulldozers (D8L), scrapers (631D, 637E), off-highway trucks (771C, 775B), SR4 and WEG generator sets, marine auxiliary engines, drilling rigs, pump units, and compressor drives across construction, mining, marine, power generation, and oil & gas sectors.

Recommended installation practices include using clean premium diesel fuel, replacing damaged seals, verifying injector calibration, and following service manual procedures. For preventive maintenance, replace fuel filters regularly, monitor exhaust smoke, and perform opening pressure tests, fuel leakage inspection, nozzle hole examination, spray pattern evaluation, and injector balance testing to ensure sustained combustion performance.