Dorman 577-236 Fuel Tank Filler Neck Steel Black OE Replacement

The Dorman 577-236 is a direct-fit replacement fuel tank filler neck designed for select Buick, Cadillac, and Oldsmobile models. Fuel filler necks are exposed to harsh underbody conditions over time, leading to rust, corrosion, and eventual fuel leaks — often triggering a check engine light or causing a failed emissions inspection. This OE Solutions replacement restores proper fuel system function quickly and reliably.

Key Features:

• Direct OE replacement — precision-engineered to match the original equipment filler neck for a hassle-free, bolt-in installation
• Steel construction — durable black steel build designed to resist corrosion and reduce the potential for future failure
• Emissions compliant — built to meet current emission standards and pass state vehicle inspections
• Dorman OE Solutions quality — engineered and quality-checked by Dorman's U.S.-based team of automotive engineers
• Sold individually — includes one (1) fuel tank filler neck

Part of Dorman's OE Solutions line, the 577-236 delivers a reliable, long-lasting repair for vehicles with a leaking or damaged fuel filler neck. No cutting or fabrication required — installs in the factory location using the original mounting hardware.