Mechanical Fuel Injector Assembly 4W-7021 4W7021 Compatible with CAT 3408/3412 Engines; Specialized Fuel Injectors for Mining Dump Trucks, Bulldozers, and Generator Sets; Compatible with CAT 3408/3412 Engines; Specialized Fuel Injectors for Mining Dump Trucks, Bulldozers, and Generator Sets

Specifications:
OE Part Number 4W-7021, Caterpillar classic pencil-style mechanical fuel injector. Standard dimensions allow for direct replacement of original equipment. Individually packaged in rust-proof, sealed packaging. Designed to match the original fuel system specifications for 3408 and 3412 models.

Compatible Models:
Compatible with Caterpillar C9.3 diesel engines; Compatible Equipment: Caterpillar E336GC and E345GC crawler excavators, medium-duty mining dump trucks, stationary industrial diesel generator sets, and mining and construction equipment.

Materials and Manufacturing:
The valve body is machined from high-quality materials, and the needle valve assembly is precision-ground and matched. It withstands high temperatures and pressures, resists corrosion from low-quality diesel fuel, and is suitable for heavy-duty, dusty, and continuous high-intensity mining environments.

Repair and Replacement:
Replace worn or faulty injectors to resolve issues such as difficult cold starts, idle surging, black exhaust smoke, increased fuel consumption, and loss of power. These are standard replacement parts stocked by construction machinery repair shops, and they can be installed in-situ without modifying the fuel lines.

Stringent Quality Control:
Each product undergoes on-machine testing for injection pressure, atomization, and sealing performance, meeting original equipment manufacturer (OEM) standards. We support both retail sales and bulk purchases by repair shops.

Warranty: 6 months
Note: If you have any questions, please feel free to contact us for assistance.
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