original 20R-4147 Diesel Injector 10R-1266 138-8754 for 3142E 3408 Diesel Engine Replacement for OEM new injector original new injector

The 20R-4147 fuel injector is engineered specifically for the 3412 engine platform, delivering precise fuel metering and consistent spray atomization across all 3412, 3412B, and 3412C variants. With an operating pressure range of 1200–1600 bar and a calibrated spray angle of 150°–160°, this injector ensures optimal combustion efficiency under the heavy-load conditions typical of industrial and marine applications. It is fully interchangeable with reference numbers 10R-7222, 331-8770, and 0R-4171, allowing for straightforward replacement without modification.

Manufactured from high-grade alloy steel, the 20R-4147 features precision-machined nozzle tips that produce a uniform spray pattern, reducing smoke emissions and improving fuel economy. Its corrosion-resistant construction supports continuous heavy-duty operation, while compatibility with industrial diesel and biodiesel blends offers flexibility for diverse fuel supplies. The injector is designed for vertical or inline installation and meets OEM standards along with global emissions requirements, making it a reliable certified component for the 3412 engine series.

Field-proven in mining equipment, marine vessels, diesel generators, compressors, and large agricultural machinery, this injector is backed by a 12-month industrial warranty and available across US, EU, APAC, MENA, and LATAM markets. Recommended service intervals include regular fuel filter cleaning, periodic inspection of the spray pattern and nozzle wear, and replacement every 20,000–30,000 operating hours using high-quality diesel to prevent clogging.