Caterpillar original Fuel Injector 4W7019 Replacement for OEM 4W-7015, Cross Reference 4W7017, 4W7018 for Caterpillar Engine Tracked Bulldozer D10N D9L D9N Construction Machinery original new injector

Built for the fuel-injection demands of heavy-duty diesel equipment, the CAT 4W7019 fuel injector nozzle is a brand-new, OEM-equivalent component for Caterpillar engine applications. It receives high-pressure fuel from the injection pump, opens when injector pressure exceeds spring tension and delivers atomized fuel into the combustion chamber. This controlled spray supports combustion efficiency, stable power output, cold-start performance and reliable operation across construction, mining, earthmoving and industrial power environments.

The nozzle is produced from premium alloy steel using precision CNC machining, advanced heat treatment and precision grinding. Accurately machined nozzle holes support consistent spray patterns and fuel delivery under varying engine loads, while hardened internal components provide wear resistance. Its design also addresses high combustion-chamber temperatures and offers resistance to sulfur-containing diesel fuel and moisture contamination. Together, these features help reduce fuel waste, support improved fuel economy and extend service life in severe operating conditions.

For purchasing and identification, 4W7019 is cross-referenced to 0R3418, 4W7018 and 0R8787, with hyphenated formats also listed in the supplied OEM database. Documented engine families include CAT 3114, 3116, 3126, 3126B, 3126E, C7, C9, 3176, 3196, 3406E, C10, C12 and C13. Actual fitment depends on engine configuration and fuel-system specification, so buyers should verify the required part number before ordering. The nozzle is supplied in brand-new condition with a 12-month warranty.