Caterpillar original 4W7019 Fuel Injector Assembly Nozzle for 3204 3208 3400 3412 Engine D10N D9L D9N Tracked Bulldozer Replacement for OEM new original new injector

The CAT 4W7019 fuel injector nozzle is a precision-engineered diesel injection component designed as a direct OEM equivalent replacement for Caterpillar engine systems. Manufactured from hardened alloy steel using advanced CNC machining processes, this nozzle delivers accurate hole geometry and consistent spray patterns essential for efficient fuel atomization across the CAT 3114, 3116, 3126, 3126B, 3126E, C7, C9, 3176, 3196, 3406E, C10, C12, and C13 engine families. It serves as a reliable alternative to part numbers 0R3418, 4W7018, 0R8787, 7W5929, 7N0449, 8N7005, 8N7006, 9L6969, 9N2366, and 7N1221.

Built to withstand severe combustion chamber temperatures and corrosive sulfur-containing fuels, the nozzle assembly incorporates wear-resistant internal components that maintain stable injection performance under variable engine loads. Optimized atomization contributes directly to improved fuel economy, reducing overall operating costs for fleet operators and equipment owners. Each unit is produced under strict quality controls to ensure proper opening pressure, reliable sealing, and dependable cold-start characteristics in demanding work cycles.

This nozzle is widely deployed across excavators, wheel loaders, bulldozers, motor graders, mining trucks, drilling rigs, diesel generators, marine auxiliary engines, and oilfield pumping units, with confirmed compatibility on CAT 312D, 315D, 320D, 323D, 324D, 325D, and 330D models. Backed by a 12-month warranty and packaged for worldwide export, the 4W7019 provides construction, mining, agricultural, marine, and power generation professionals with a durable, cost-effective solution for maintaining diesel fuel injection performance in heavy-duty industrial environments.