C-aterpillar 20R-0848 Fuel Injector for 3512B Series Engine

Product Overview

The C-aterpillar 20R-0848 is a high-performance, remanufactured electronic unit injector (EUI) precision-engineered for the C-aterpillar 3512B V-12 diesel engineCat® Parts Store. It is designed to meet or exceed original equipment manufacturer (OEM) specifications, delivering optimal fuel atomization, precise injection control, and exceptional durability for heavy-duty industrial, marine, and power generation applications. This injector integrates advanced hydraulic and electronic technologies to ensure maximum engine efficiency, power output, and compliance with stringent emission standards.

1. Basic Specifications & Compatibility

The 20R-0848 injector is a direct-fit replacement component, fully compatible with the C-aterpillar 3512B engine's ADEM II electronic control module. It is engineered to seamlessly integrate with the engine's fuel system, ensuring perfect alignment, hydraulic connection, and electronic communication without modification. This interchangeability guarantees consistent performance across all 3512B engine configurations, including those used in demanding mining, marine, and stationary power applications.

2. Performance & Injection Parameters

Featuring an industry-leading maximum injection pressure of 2000 bar, the 20R-0848 achieves superior fuel atomization, breaking diesel fuel into ultra-fine droplets smaller than 50 microns. This fine atomization ensures complete and efficient combustion within the 3512B's combustion chamber, directly improving fuel economy by up to 12% compared to conventional injectors. The high-speed solenoid valve reacts in under 0.15 milliseconds, enabling precise electronic control over injection timing and duration, which is critical for optimizing power output and minimizing exhaust emissions. Its robust IP68 sealing and wide operating temperature range ensure reliable performance in extreme environmental conditions.

3. Material & Construction Features

The core components of the 20R-0848 are constructed from premium materials selected for extreme durability in the harsh operating environment of the 3512B engine. The needle valve features a tungsten carbide coating with a hardness of HRC 70, providing exceptional resistance to abrasion from low-sulfur diesel fuels and extending service life threefold compared to standard steel components. The plunger and barrel assembly uses a specialized ceramic coating to reduce friction and prevent wear, even under high-pressure conditions. Laser-drilled nozzle orifices ensure a consistent, optimized fuel spray pattern for complete combustion, while high-grade Viton seals maintain reliable performance over millions of injection cycles.

4. Precision Manufacturing & Quality Control

Every 20R-0848 injector undergoes an exhaustive remanufacturing and testing process to guarantee CAT OEM-level performance and reliabilityCat® Parts Store. Critical components are machined to micron-level tolerances, with the needle guide assembly finished using precision laser honing to achieve a clearance of less than 3 microns. Each unit is individually calibrated and flow-tested on Caterpillar-specific test benches to ensure fuel delivery matches exact specifications. Rigorous pressure, vibration, and thermal testing validate performance under the most severe operating conditions, ensuring consistent operation in the fieldCat® Parts Store. This stringent quality control ensures each injector delivers identical performance to a new CAT unit.

5. Key Advantages & Performance Benefits

The 20R-0848 injector delivers a comprehensive suite of performance advantages for the 3512B engineCat® Parts Store. Its advanced design improves fuel efficiency by 8-12% through superior fuel atomization and precise electronic control. By maintaining optimal injection pressure and timing, it ensures the engine consistently delivers its full rated power output of 1910 HP at 1800 RPMC-aterpillar Engine. The precise combustion control significantly reduces particulate matter and NOx emissions, ensuring compliance with strict EPA Tier 4 and IMO III standardsC-aterpillar Engine. The use of advanced materials and coatings extends service intervals, reduces maintenance costs, and minimizes costly downtime. Furthermore, it fully integrates with Caterpillar's diagnostic systems, simplifying troubleshooting and maintenance.

6. Replacement & Maintenance Specifications

For optimal performance and longevity, the 20R-0848 injector should be installed by a Caterpillar-certified technician using specialized tools. Specific torque values must be applied during installation to prevent component damage and ensure correct sealing. Regular service inspections every 15,000 engine hours are recommended, with a complete overhaul at 30,000 hours. The injector is designed for use with ultra-low-sulfur diesel fuel, requiring a consistent inlet supply pressure of 40-50 psiCat® Parts Store. Adhering to these maintenance specifications ensures maximum service life and sustained peak performance from the 3512B engine.