Caterpillar original 20R-3483 Fuel Injector for CAT 3512B 3516B Series, Replacement for OEM 10R-1290, Common Rail Injector 10R-1275 for Excavator, 20R-3477 original new injector

Built exclusively for the Caterpillar 3512B diesel engine platform, the 20R-3483 is an OEM-spec fuel injector designed as a core component of CAT 3500 Series electronic fuel injection systems. It receives timing signals from the engine control module to deliver precisely metered, highly atomized fuel directly into the combustion chamber under extreme pressure, supporting optimal combustion efficiency, maximum power output, reduced fuel consumption and lower exhaust emissions. It cross-replaces part numbers 10R-4931, 10R4931, 10R-4932 and 10R4932 for seamless fitment on specified engines.

Manufactured with high-strength alloy steel and precision-ground internal components, this injector delivers exceptional durability, corrosion resistance, wear resistance and long-term operational stability even under harsh operating conditions. Every unit undergoes strict quality control procedures including flow rate testing, leakage testing, spray pattern analysis, response time verification, pressure calibration and endurance testing to ensure consistent performance for continuous-duty industrial operation. It meets OEM quality standards and is supplied in brand-new condition.

This injector is compatible with CAT 3512B engines deployed across power generation, marine propulsion, mining, oil and gas, and construction sectors, covering equipment ranging from generator sets and marine vessels to mining machinery, compressor stations and heavy construction equipment. Backed by a 12-month warranty and supplied in neutral packing, it provides B2B operators with reliable, OEM-level fuel system performance to reduce unplanned downtime and support high-load industrial operations.