Dorman 904-103 Fuel Injection Return Line Gasket Kit

Reliable Fuel Injection Return Line Gasket Kit for Chevrolet and GMC

The Dorman 904-103 Fuel Injection Return Line Gasket Kit is designed to provide a secure and leak-free seal for fuel injection return lines on select Chevrolet and GMC trucks. Engineered with both metal and rubber gasket materials, this kit ensures durability and proper sealing for your vehicle's fuel system.

• Includes 5 fuel line gaskets combining metal and rubber materials
• Gasket and seal thickness of 1 for precise fit and reliable sealing
• Compatible with Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 models
• No installation hardware included, designed for use with existing components
• Part number 904-103 for easy identification and replacement

Durable Gasket Materials for Effective Fuel System Sealing

This fuel injection return line gasket kit features a combination of metal and rubber gasket materials to withstand the demands of fuel system pressure and temperature variations. The metal components provide structural integrity, while the rubber elements ensure a tight seal to prevent leaks. Both gasket and seal thicknesses are calibrated at 1, offering consistent performance and fitment. This kit is specifically tailored for heavy-duty Chevrolet and GMC trucks, including the Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500, ensuring compatibility and reliable operation.

Applications and Common Issues Addressed

• Prevents fuel leaks in the injection return line
• Eliminates fuel odor caused by gasket failure
• Resolves poor engine performance related to fuel pressure loss
• Addresses fuel system contamination from gasket degradation
• Helps maintain proper fuel injection system pressure

Installation Notes and Tips

• Ensure the fuel injection return line surfaces are clean and free of debris before installation
• Use the existing installation hardware; no additional hardware is included in this kit
• Inspect fuel lines and connectors for wear or damage during gasket replacement
• Follow manufacturer torque specifications to avoid over-tightening
• Replace all gaskets in the kit to maintain consistent sealing performance

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 904-103 Fuel Injection Return Line Gasket Kit undergoes rigorous quality control to ensure durability and reliability in demanding fuel system applications. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman's official warranty policy for complete information.