Dorman 577-321 Fuel Filler Neck

Overview of Dorman Fuel Tank Filler Neck 577-321

The Dorman 577-321 fuel tank filler neck is designed for reliable fuel delivery in select Buick and Pontiac vehicles. Constructed from durable steel, this 30-inch filler neck ensures a secure connection between the fuel cap and the fuel tank for models like the Buick Bonneville and Pontiac LeSabre.

• Made from corrosion-resistant steel for long-lasting durability
• 30-inch length with a 2-inch diameter for proper fitment
• Compatible with Buick Bonneville and Pontiac LeSabre models
• Includes one fuel filler neck per package
• Fuel cap not included

Detailed Product Description

This fuel tank filler neck by Dorman is engineered to meet the specifications required for proper fuel storage and delivery in Buick Bonneville and Pontiac LeSabre vehicles. The steel construction provides resistance to rust and wear, which is critical for maintaining a secure fuel system connection. With a length of 30 inches and a 2-inch diameter, this filler neck is designed to fit precisely, ensuring safe and efficient refueling without leaks or fuel vapor loss. The part number 577-321 corresponds specifically to this configuration, making it easier to identify for replacement needs.

Compatible Vehicles and Common Applications

• Replacement for fuel tank filler necks on Buick Bonneville models
• Replacement for fuel tank filler necks on Pontiac LeSabre models
• Addresses issues such as fuel leaks around the filler neck area
• Resolves problems with damaged or corroded filler necks causing fuel odors
• Helps prevent fuel spillage during refueling

Installation Notes and Tips

Installation of the Dorman 577-321 fuel tank filler neck requires basic automotive tools and safety precautions. Ensure the vehicle is parked on a level surface and the engine is cool before beginning. Remove the old filler neck carefully to avoid damaging the fuel tank or surrounding components. Verify the new filler neck’s length and diameter match the original part. Tighten all clamps and connections securely to prevent leaks. Since the fuel cap is not included, retain or replace the existing cap as needed.

Quality Assurance and Warranty Information

Dorman manufactures this fuel tank filler neck to meet or exceed OEM standards for fit, form, and function. The steel material is selected for corrosion resistance and durability under typical operating conditions. While specific warranty details are not provided here, Dorman parts generally come with a limited warranty covering defects in material and workmanship. Refer to Dorman’s official documentation for complete warranty terms.