Caterpillar original 7W7045 Fuel Injector Pencil Nozzle for 3304 3306 3300B Diesel Engine, Replacement for OEM 170-5181 0R3591 8N7005 4W7017 original new injector

The Caterpillar 7W7045 nozzle injector is engineered as a direct OEM replacement component built to serve the Caterpillar C7 7.2L, C9 8.8L, and C13 12.5L diesel engines commonly found across heavy industrial equipment. Cross-referenced with 0R-3045, 7W-7045X, and 236-4382, this injector nozzle provides reliable interchangeability for procurement teams managing mixed fleet inventories operating across construction, mining, agriculture, oil and gas, and heavy transport sectors.

Manufactured to industrial-grade OEM and aftermarket quality standards, the 7W7045 features a precision plunger and nozzle needle mechanism that delivers highly accurate fuel atomization and an optimized spray pattern. The nozzle assembly is built from durable materials engineered to withstand wear, corrosion, and high injection pressures reaching up to 2000 bar, contributing directly to reduced particulate emissions and lower NOx output. With proper installation at the recommended torque of 25-30 Nm and routine cleaning at 1000-hour service intervals, the injector supports an extended operational service life under demanding duty cycles.

Designed for direct OEM fitment, the 7W7045 nozzle injector offers fleet operators, distributors, and maintenance professionals a dependable fuel delivery solution that addresses common diesel engine symptoms including hard starting, exhaust smoke, reduced power output, engine misfire, and elevated fuel consumption. Whether deployed in excavators, bulldozers, dump trucks, mining trucks, agricultural tractors, drilling rigs, logging equipment, or heavy transport machinery, this Caterpillar nozzle injector delivers consistent performance, simplified installation, and long-term value across global Caterpillar equipment applications.