4W‑3798 Construction Engine CAT 3406 Diesel Engine For Heavy Duty Excavator

4W‑3798 fuel injector assembly compatible with 3406 series engine, high‑precision aftermarket replacement part for heavy‑duty excavator, truck and mining machinery.

Key Features

1. OEM equivalent part number: 4W‑3798, direct fit for 3406 series diesel engine
2. High‑strength alloy material, wear‑resistant internal parts for long‑time heavy‑load use
3. Stable high‑pressure injection performance, uniform fuel atomization and full combustion
4. Improve engine power output, reduce fuel consumption and exhaust black smoke
5. Strict factory testing for injection pressure, flow rate and sealing performance
6. Standard installation size, plug‑and‑play without modification
7. Anti‑corrosion and high‑temperature resistant, adapt to harsh mining and construction conditions
8. Compatible with multiple cross‑reference part numbers and engine models

Fitment Application

Suitable for heavy‑duty mining trucks, large‑tonnage excavators, bulldozers, wheel loaders and

marine engines equipped with 3406 series diesel engines, widely used in mining sites, large

construction projects and industrial power equipment.