Hitachi FIJ0051 Fuel Injector

OE Fuel Injector for GM Applications

The Hitachi FIJ0051 fuel injector is an actual OE replacement built for direct-fit service in a wide range of GM vehicles. It is used in fuel injection systems where precise fuel delivery is critical for smooth idle, throttle response, and consistent engine performance.

Compatible With select Buick, Cadillac, Chevrolet, and GMC models, including the 2019-2020 Buick Regal Sportback, 2018-2020 Cadillac CT6, and 2018-2020 Chevrolet Camaro. The FIJ0051 is also cross-referenced to OE part numbers 12647362 and 12692884 for the same application.

Key Features

• Hitachi fuel injector for air and fuel delivery service
• Actual OE grade for direct replacement use
• Built for GM fuel injection system applications
• Supports accurate fuel metering at the injector level
• Fits multiple Buick, Cadillac, Chevrolet, and GMC models

Detailed Description

Hitachi FIJ0051 is a fuel injector engineered for GM vehicles that require OE-level fuel delivery performance. It serves as a direct replacement in applications such as the 2017-2019 Buick LaCrosse, 2018-2019 Cadillac ATS and CTS, 2019-2020 Chevrolet Blazer, 2019-2020 GMC Acadia, and other listed models. Use this injector when restoring proper fuel atomization and maintaining consistent combustion across the engine’s operating range.

What It Helps Address

• Hard starting caused by inconsistent fuel delivery
• Rough idle from a worn or restricted injector
• Misfire conditions related to poor injector performance
• Fuel trim issues tied to uneven cylinder fueling
• Loss of throttle response from inaccurate fuel metering

Installation Notes and Tips

Verify engine code, RPO code, and VIN-specific fitment before ordering. This injector is listed with an exception for RPO code NU5 on certain 2016-2018 Cadillac, Chevrolet, and GMC applications. Confirm the intake and fuel rail configuration on the vehicle before installation, and follow factory service procedures for fuel system depressurization and injector replacement.

Quality Assurance

Hitachi supplies OE-grade fuel system components, and FIJ0051 is listed as an actual OE part for the applications shown. Confirm fitment against the vehicle’s exact year, make, model, and engine configuration before installation.