Caterpillar original Caterpillar 293-4071 Diesel Engine Fuel Injector for C7 C9 330 E330D Replacement for OEM new injector original new injector

Engineered specifically for Caterpillar C9 and C9 ACERT diesel engines, this fuel injector OE 293-4071 delivers precise fuel metering, accurate injection timing, and consistent atomization through calibrated nozzle holes. The injector receives pressurized diesel from the fuel supply system, controls injection quantity electronically, and sprays finely atomized fuel directly into the combustion chamber to support complete combustion, reduce black smoke, improve fuel economy, and stabilize engine output under heavy load conditions typical of construction and mining operations.

Compatible with a wide range of CAT heavy equipment including the D6R bulldozer, D6T track-type tractor, E330D and E336D excavators, this Caterpillar C9 fuel injector is a direct replacement for OE cross numbers 10R-7221, 20R-8063, 20R-1938, 267-9734, 328-2573, 387-9434, 266-4446, AP63946, and APP41327. Built to OE specification and designed for modern low-sulfur diesel fuels, the injector supports the reman market, aftermarket distribution, and global equipment repair channels across construction, road machinery, quarry, forestry, and industrial power sectors.

Proper service life depends on clean diesel fuel, scheduled fuel filter replacement, regular water separator draining, inspection for external leakage, spray pattern testing during overhaul, return flow checks when hard starting occurs, and diagnostic code scanning for misfire or rough running. Common failure causes such as clogged nozzles, internal leakage, worn injector valves, damaged seals, air ingress, or low fuel pressure can be identified through cylinder cut-out testing, fuel pressure inspection, and verification of the engine serial number and original injector part number before installation.