Repl. Fuel Injector 55LB

The Replacement Fuel Injector 55LB (FiTECH model 10055) is a precision component engineered for owners upgrading to or maintaining FiTECH throttle body EFI systems. This fuel injector delivers the high flow capacity required for modern engine management, making it essential for custom builds, fuel-injected conversions, and performance restorations. Whether you're transitioning from carburetor to electronic fuel injection or replacing a worn unit in an existing FiTECH setup, this injector ensures accurate fuel metering and reliable engine operation.

Rated at 55 pounds per hour (55LB), this fuel injector is specifically calibrated for mid-range displacement and performance applications where precision atomization and flow consistency matter. The injector integrates seamlessly with FiTECH's closed-loop feedback system, allowing the ECU to adjust fuel delivery in real time based on oxygen sensor readings and throttle input. Its compact design—measuring 1.55 × 0.95 × 3.05 inches and weighing just 0.06 pounds—fits within the tight confines of throttle body installations while maintaining durability and response time critical for engine tuning and drivability.

This replacement injector is ideal for builders and mechanics maintaining or expanding FiTECH fuel injection systems in street rods, muscle cars, trucks, and classic vehicles. It serves as a drop-in replacement for original or damaged units and can be incorporated into multi-injector throttle body configurations for engines requiring higher fuel volume. Installation is straightforward for anyone familiar with EFI connector types and fuel line routing; always verify flow rating compatibility with your FiTECH ECU tune and engine displacement before installation to ensure optimal air-fuel ratios and performance.