Dorman 904-158 Fuel Injector Line

Durable Stainless Steel Fuel Injector Line for Chevrolet and GMC Trucks

The Dorman 904-158 fuel injector line is engineered to provide reliable fuel delivery for heavy-duty Chevrolet and GMC trucks. Designed specifically for models like the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD, this fuel injector line ensures consistent performance under high pressure conditions.

• Constructed from corrosion-resistant stainless steel for long-lasting durability
• Compatible with Chevrolet and GMC heavy-duty trucks including Sierra and Silverado 2500 HD and 3500 HD models
• Features metric coarse female fittings: M16 x 1.5 inlet and M14 x 1.5 outlet thread sizes
• Capable of withstanding up to 25,000 psi maximum pressure
• Includes one fuel injector line with precise dimensions: 12.8 inches and 8.3 inches lengths, 3 mm inside diameter, and 6.5 mm outside diameter

Technical Specifications and Design Details

The Dorman 904-158 fuel injector line is crafted from stainless steel tubing with a wall thickness of 1.75 mm, providing strength and resistance to wear and corrosion. The line measures 12.8 inches and 8.3 inches in length, accommodating the specific routing requirements of the fuel injection system in Chevrolet and GMC heavy-duty trucks. Both inlet and outlet fittings are female with metric coarse threads—M16 x 1.5 for the inlet and M14 x 1.5 for the outlet—ensuring secure and leak-free connections. The steel fittings complement the stainless steel tubing to maintain structural integrity under high fuel pressures up to 25,000 psi.

Compatible Vehicles and Applications

This fuel injector line is compatible with the following vehicles:

• Chevrolet Sierra 2500 HD
• Chevrolet Sierra 3500 HD
• Chevrolet Silverado 2500 HD
• Chevrolet Silverado 3500 HD
• GMC Sierra 2500 HD
• GMC Sierra 3500 HD

It is designed to replace worn or damaged fuel injector lines in these models, ensuring proper fuel delivery and engine performance.

Common Issues Addressed by This Fuel Injector Line

• Fuel leaks caused by cracked or corroded injector lines
• Reduced fuel pressure affecting engine performance
• Fuel injector line damage from wear or impact
• Corrosion-related failures in older fuel lines
• Improper fuel delivery leading to engine misfires or rough idling

Installation Notes and Tips

When installing the Dorman 904-158 fuel injector line, ensure the engine is cool and fuel system pressure is relieved before removal. Use appropriate tools to avoid damaging the metric coarse female fittings. Verify that the new line matches the original in length and fitting specifications. Tighten fittings to manufacturer torque specifications to prevent leaks. Inspect surrounding components for wear or damage during installation.

Quality Assurance and Warranty

Dorman manufactures this fuel injector line to meet or exceed OEM standards for fit, form, and function. The stainless steel construction and steel fittings provide durability suitable for heavy-duty applications. This part is backed by Dorman's limited warranty, covering defects in material and workmanship under normal use conditions.