104-3377 0R-8786 156-3895 173-9267 191-3005 232-1166 232-1173 Diesel Engine Fuel Injector For Caterpillar CAT 3412 3408

Fuel metering accuracy determines how efficiently a V12 diesel converts every litre of fuel into usable shaft power. The 156-3895 fuel injector is engineered for 3412 Series four-stroke diesel engines, covering 3412, 3412B, 3412C, 3412 DITA, marine, generator and industrial power unit builds. Each unit installs directly into the cylinder head injector bore and is factory flow tested to support consistent cylinder-to-cylinder balance.

Precision-machined internal components deliver exact fuel metering, while heavy-duty hardened materials withstand sustained high temperature and high injection pressure. Anti-corrosion treatment extends service life in marine and industrial environments. In operation, high-pressure fuel enters the injector, the needle valve stays closed until calibrated pressure is reached, then lifts to spray atomized diesel into the combustion chamber, where compression heat ignites the charge. The result is improved atomization, higher combustion efficiency, reduced fuel consumption, lower emissions and stable power output.

Interchangeable with 0R-8780, 10R-0955 and 20R-2055, this injector supports generator sets, commercial and fishing vessels, offshore support craft, mining haul trucks, pump and compressor drives, and oilfield power modules. Supplied under strict quality inspection with a 12-month warranty, neutral or custom branded packaging, technical documentation and global export support for dealers, engine remanufacturers, fleet operators, generator builders, marine service companies and industrial maintenance providers.