Standard Ignition FIR12 Diesel Fuel Injector Rail - Left

Diesel Fuel Injector Rail for GM HD Trucks

Standard Ignition FIR12 is a new diesel fuel injector rail for the left side of select heavy-duty GM trucks. It is built for 2017-2022 Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as 2017-2022 GMC Sierra 2500 HD and Sierra 3500 HD applications.

Use FIR12 when you need a direct replacement diesel injection rail with the correct female blade terminal connection and fuel fittings included. This part cross-references 12672472 and DFR102 for the same application.

Key Features

• New diesel fuel injector rail for fuel injection system service
• Fits the left side on select Chevrolet Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD models
• Fuel injection type: diesel
• Fuel injector type: diesel injection
• Fuel fittings included
• Female terminal design with 2 blade terminals
• No fuel injectors included
• No gasket or seal included

Detailed Description

Standard Ignition FIR12 is a diesel fuel injector rail engineered for the fuel delivery side of compatible GM heavy-duty pickups. It is a new replacement part for the left position on 2017-2022 Chevrolet Silverado 2500 HD and Silverado 3500 HD, plus 2017-2022 GMC Sierra 2500 HD and Sierra 3500 HD models. The rail is specified with fuel fittings included, a female terminal configuration, and two blade terminals for the electrical connection.

For buyers searching for a 2017-2022 Chevrolet Silverado 2500 HD left diesel fuel injector rail, a 2017-2022 GMC Sierra 3500 HD left fuel injection rail, or a Standard Ignition FIR12 replacement, this part provides the listed OE-style application coverage. It also cross-references 12672472 and DFR102 for the same application.

Common Issues This Part May Address

• Damaged or leaking diesel fuel injector rail
• Faulty fuel delivery at the rail assembly
• Electrical connection issues at the rail terminal
• Service replacement for a worn left-side rail
• Fuel system repair after rail contamination or corrosion

Installation Notes and Tips

Confirm left-side placement before installation and verify connector style, terminal count, and fuel line routing against the original part. Because no gasket or seal is included, inspect the existing sealing components and replace them as needed during service. Always follow the vehicle service procedure for diesel fuel system depressurization and rail installation.

Quality Assurance

Standard Ignition supplies new fuel system components for repair and replacement applications. FIR12 is built as a new diesel fuel injector rail and is identified for direct fitment on the listed GM heavy-duty truck applications.