Standard Ignition DIL4 Diesel Fuel Injector Line

Diesel Fuel Injector Line for GM Duramax Applications

Standard Ignition DIL4 is a diesel fuel injector line built for 2001-2004 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 applications with LB7 engines. It is formed for the correct angle and uses corrosion-resistant steel construction to support a precise fit on the injector and fuel rail connection points.

This part cross-references Dorman OE Solutions 904-126 for the same application.

Key Features

• Fits LB7 diesel engine applications with Engine ID Code LB7 and Engine VIN Code 1
• Standard Ignition DIL4 diesel fuel injector line for direct replacement service
• High-grade steel construction with zinc coating to help resist corrosion
• Bent to the proper angle for fitment and installation alignment
• Ferrule tip ends are shaped to seal at the injector inlet and fuel rail outlet
• Burst-tested to maintain the high-pressure fuel delivery required by the engine
• Two-port design for the specified injector line routing

Detailed Description

Standard Ignition DIL4 is a diesel fuel injector tube designed for the high-pressure fuel system used in 2001-2004 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 trucks with the LB7 diesel engine. The steel tube is zinc coated to help prevent corrosion, and the formed shape supports accurate routing during replacement. The ferrule-style ends are made to seat securely at the injector and fuel rail connection points, helping maintain a tight seal in the fuel system. Standard Ignition DIL4 is a practical replacement choice when servicing a leaking, damaged, or corroded injector line on these GM diesel applications.

What It Helps Address

• Fuel seepage at the injector line connection
• Corrosion on an existing diesel injector tube
• Cracked, bent, or damaged fuel line routing
• Pressure loss in the high-pressure fuel delivery circuit
• Hard starting or rough running caused by a compromised injector line

Installation Notes and Tips

Confirm LB7 engine identification before ordering. This Standard Ignition DIL4 line is listed for cylinder 2 and 7 applications on the vehicles shown. No gaskets or hardware are included, so inspect the mating surfaces, injector seat, and fuel rail connection points before installation. Clean all sealing areas thoroughly and verify line alignment before tightening to help prevent leaks.

Quality Assurance

Standard Ignition builds this injector line from anti-corrosive steel and tests it against bursting to help ensure the fuel system can maintain the pressure required for operation. The formed tube and ferrule ends are engineered for secure sealing at the injector and rail interfaces.