10R-7938 Remanufactured Diesel Injector For Caterpillar C4.4 & C6.6 | High-Pressure Common Rail Precision
1. Product:10R-7938
2. Compatible Equipment: Diesel Fuel Injection Systems
3. Manufacturer: Aftermarket OEM Replacement
4. Condition: Brand New, Fully Tested
5. Origin: ABOSEDE Diesel
6. Shipping period: 3-5 business days
7. Payment terms: T/T, Western Union, PayPal
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Product Introduction
In the demanding world of heavy-duty diesel mechanics, the margin for error is non-existent. The 10R-7938 diesel injector represents the pinnacle of Caterpillar's remanufacturing capabilities, specifically engineered to restore C4.4 and C6.6 engines to OEM specifications. Unlike standard replacements, this unit is not merely cleaned; it is completely disassembled, inspected, and rebuilt using genuine Cat parts. From an engineering perspective, this injector is the critical interface between the high-pressure fuel rail and the combustion chamber, tasked with atomizing diesel fuel at extreme pressures to ensure optimal thermal efficiency and emission compliance.
Hydraulic Architecture and Solenoid Actuation
At the core of the 10R-7938 lies a sophisticated solenoid-actuated hydraulic system. This injector utilizes a high-speed solenoid valve to control the injection event with microsecond precision. When the Engine Control Module (ECM) signals the solenoid, it lifts a precision-ground valve, altering the hydraulic balance within the injector body. This action allows the high-pressure diesel to overcome the nozzle spring force, lifting the needle valve and atomizing fuel into the cylinder. The rapid response time of this solenoid is essential for achieving the "pilot," "main," and "post" injection strategies required by modern emission standards.
Critical Application and Fitment Data
This injector is a direct replacement for specific serial number ranges of Caterpillar industrial and marine engines. It is engineered to interface seamlessly with the engine's wiring harness and high-pressure fuel lines.
Compatible Engines:
Caterpillar C4.4: Industrial engines used in compact track loaders, skid steer loaders, and small excavators.
Caterpillar C6.6: Widely used in mid-range excavators, wheel loaders, and marine propulsion applications.
Technical Specifications:
Fuel Type: Ultra-Low Sulfur Diesel (ULSD) / Biodiesel blends (up to B20).
Control Method: Electronic Solenoid (2-pin connector).
Mounting: Clamp installation with high-tensile retention.