Caterpillar original 386-1752 Diesel Engine Fuel Injector 392-0200 Replacement for OEM 266-4387 Compatible with C3500 Engines, SR4B SR4BHV Generator Set, 20R-1277 Excavator original new injector

The Caterpillar 386-1752 diesel fuel injector is a precision-engineered component built to Caterpillar OEM specifications for the CAT 3500 Series heavy-duty engine platform, with primary application in 3512B engines and cross-compatibility across 3508, 3508B, 3508C, 3512, 3512C, 3516, 3516B and 3516C variants. As a critical fuel system component, it handles accurate fuel metering, injection timing control, optimized atomization and consistent spray patterns to boost combustion efficiency, reduce emissions and maintain stable engine power output. It operates via ECM electrical signals that activate its solenoid valve, releasing high-pressure diesel into the combustion chamber based on real-time engine RPM, load and ambient conditions.

Constructed with precision-machined internal parts and advanced nozzle technology, the 386-1752 injector is engineered for reliable performance under extreme operating conditions. It meets strict OEM dimensional accuracy requirements, delivering consistent fuel delivery, reduced smoke, improved fuel economy, lower maintenance costs and stable power output across long service cycles. Its heavy-duty industrial design delivers exceptional durability to withstand high pressures and demanding workloads common across heavy-duty industrial engine applications.

This versatile injector supports use cases across power generation, marine, mining, oil and gas and heavy industrial sectors, including prime and standby generator sets, marine propulsion engines, mining trucks, quarry equipment, offshore platforms and data center backup generators. It is supplied as a new OEM-equivalent part with a 12-month warranty, and customers are advised to verify engine serial number compatibility before purchase. Professional installation following OEM specifications is recommended to ensure optimal performance and service life.