original 20R-8427 20R8427 Common Rail Fuel Injector Assembly for C7 C9 C13 C15 Excavator Engine Diesel Injector 387-9433 10R-7222 328-2585 20R-8059 original new injector

Engineered as a direct-fit replacement for the C9 8.8-liter inline 6-cylinder diesel platform, this fuel injector assembly (OE 20R-8427, cross referenced to 387-9435, 20R-1959, CA20R8427, CA3879435, CA20R1959, 573-4235 and 20R-1259) is manufactured to original-type reman specifications. It is designed for C9, C9 ACERT and 8.8L C9 engines operating at 205–280 bkW / 275–375 bhp and 1800–2200 rpm, and meets China Stage III, EPA Tier 3 equivalent and EU Stage IIIA equivalent emissions standards.

The injector delivers precision fuel metering and stable atomization to improve combustion efficiency, engine power output, smoke control and overall durability. Its heavy-duty structure provides high-temperature and wear resistance under continuous industrial load, while the engine-matched design ensures fast, error-free installation and reliable long-term service. Each unit is performance-tested to support consistent cylinder balance, reduced downtime and predictable field behavior. Typical applications include excavators, loaders, bulldozers, graders, mining support machinery, diesel generator sets, rental power fleets, pumps, compressors, stationary engines, C9-powered trucks, and agricultural, forestry and marine auxiliary systems.

Recommended service practices include using clean diesel fuel, replacing fuel filters on schedule, draining the water separator, keeping injectors sealed and dry, and performing balance or cut-out testing when rough idle, misfire, black or white smoke, low power, high fuel consumption or fuel-in-oil is detected. Ideal for diesel repair distributors, engine rebuilders, fleet workshops and global aftermarket buyers.