7N-9843 7N9843 Mechanical Diesel Injector Assembly Compatible with CAT 3306/3306B engines, 14G motor graders, 950B loaders, D250 mining trucks, and generator sets—injectors specifically designed for construction machinery

Specifications:
OE Part No. 7N-9843, Caterpillar classic pencil-style mechanical fuel injector, standard mounting dimensions, direct in-place replacement for original equipment, meets OEM specifications for the 3306 series engine fuel system.

Compatible Models:
Compatible with Caterpillar 3306 and 3306B diesel engines; applicable equipment: 14G motor graders, 950B wheel loaders, D250 mining dump trucks, stationary diesel generator sets, and mining and construction machinery.

Materials and Manufacturing:
The valve body is made of 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 can operate reliably over the long term in harsh construction site environments characterized by high dust levels and heavy-duty, bumpy conditions.

Repair and Replacement:
Replaces worn or damaged original injectors to resolve issues such as difficult cold starts, idle surging, black exhaust smoke, increased fuel consumption, and lack of power. It is a standard replacement part stocked by construction machinery repair shops.

Stringent Quality Control:
All products undergo bench testing for injection pressure, atomization performance, and sealing integrity, with all metrics 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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