Dorman 577-874 Fuel Tank Filler Neck

Reliable Fuel Tank Filler Neck for Chevrolet and GMC Trucks

The Dorman 577-874 fuel tank filler neck is designed to provide a durable and precise fit for Chevrolet S10, S15, and GMC Sonoma models. Constructed from steel with a black finish, this fuel filler neck ensures long-lasting performance and resistance to wear.

Key Features of the Dorman 577-874 Fuel Filler Neck

• Material: Heavy-duty steel construction for strength and durability
• Length: 12.5 inches, designed to match OEM specifications
• Color: Black finish for corrosion resistance
• Fill pipe inside diameter: 2 inches, compatible with standard gas fuel caps
• Vent line: Includes one metal tube vent for proper fuel tank ventilation
• Cap type: Twist style (fuel cap not included)
• Compatible fuel type: Gasoline
• Package includes one fuel filler neck

Detailed Description of the Fuel Tank Filler Neck

The Dorman 577-874 fuel tank filler neck is engineered to meet the exact requirements of Chevrolet S10, S15, and GMC Sonoma trucks. Its steel construction provides reliable resistance against rust and damage from road debris. The 12.5-inch length and 2-inch inside diameter fill pipe ensure a proper fit and secure fuel flow. The single metal tube vent line supports effective tank ventilation, reducing pressure buildup during refueling. This part is designed for gasoline fuel systems and features a twist-type cap interface, compatible with standard fuel caps (cap not included).

Common Applications and Issues Addressed

• Replacement for cracked or damaged fuel filler necks causing fuel leaks
• Fixes issues with improper fuel tank ventilation leading to refueling problems
• Resolves corrosion-related failures in older filler necks
• Prevents fuel odor and vapor leaks from compromised filler necks
• Restores secure fuel cap fitment and prevents fuel spillage

Installation Notes and Tips

Installation requires removal of the old filler neck and securing the new part in place. Note that mounting hardware and fuel cap are not included and must be reused or purchased separately. Ensure all connections are tight and vent lines properly attached to maintain fuel system integrity. Professional installation is recommended for best results.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While specific warranty details for part number 577-874 are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. Verify warranty terms with the supplier or manufacturer documentation.