Caterpillar original  268-1839 Fuel Injector for C7 C9 Engine 330C 324D 325D 329D 330C L 330C LN Excavator Replacement for OEM new injector original new injector

Engineered for demanding off-highway service, this C7 HEUI fuel injector assembly (OE 268-1839, cross number CA2681839) is a direct replacement component for C7, C-7, and C7 ACERT diesel engines. Built around the 7.2 L inline 6-cylinder platform rated at approximately 168–224 bkW / 225–300 bhp at 1800–2200 rpm, the injector integrates precision fuel delivery, electronic control, and hydraulic actuation to support stable combustion across the full operating range. It is commonly specified for 324D, E324D, 325D, E325D, 329D, and E329D excavators; 120K and 140K motor graders; 950H and 962H wheel loaders; and 525C, 535C, and 545C wheel skidders.

Functionally, the unit combines fuel atomization, sealing, and pressure balancing to help the C7 engine deliver improved starting behavior, reduced black and white smoke potential, stable idle, better power response, and lower fuel consumption under load. Heavy-duty internal components and durable seals are designed to withstand vibration, thermal cycling, and the high oil-actuation pressures characteristic of HEUI operation, while export-ready packaging protects the assembly during international shipment and warehouse storage.

Before installation, confirm machine serial number, engine serial number, engine arrangement number, old part number, connector type, and injector appearance. Maintain clean diesel fuel, high-quality engine oil, timely filter replacement, and inspection of electrical connectors to ensure long service life.