2.0L Turbocharged Engine Fuel Injector

The Subaru 16611AA521 is an authentic factory-original fuel injector engineered to meet the precise flow and spray pattern requirements of the 2.0L turbocharged DOHC engines found in 2002-2005 Subaru Impreza WRX models. Replacing a degraded or malfunctioning injector is critical to maintaining optimal air-fuel ratios and preventing engine performance issues. A failed fuel injector often manifests as noticeable engine misfires, erratic bucking, or hesitation during acceleration. If your vehicle is experiencing these symptoms or has triggered a check engine light related to fuel delivery, this genuine Subaru component restores proper fuel atomization and system efficiency. This injector is a vehicle-specific replacement for the aforementioned 2.0L Impreza WRX configurations. Professional diagnostic verification is recommended if you suspect fuel system faults, as similar performance issues can occasionally stem from other sensors or ignition components. Ensure the part number 16611AA521 matches your vehicle's specific engine requirements for proper compatibility.