Recessed Fender Filler

The recessed fender filler from ATL Fuel Cells is a purpose-built fuel cap assembly designed for vehicle builders and enthusiasts who demand both form and function. This twist-lock cap assembly addresses a critical need in custom fabrication: integrating fuel access into recessed fender mounts without compromising structural integrity or aesthetic appeal. Whether you're building a race car, custom street rod, or performance vehicle, the recessed fender filler eliminates the visual bulk of traditional external fuel caps while maintaining secure, tool-free access to your fuel system.

Constructed from steel with a durable black powder coat finish, this filler cap kit is engineered for longevity and corrosion resistance in demanding automotive environments. The twist-lock mechanism provides positive engagement without requiring external latch hardware, reducing weight and complexity while ensuring the cap remains sealed during operation. The recessed mount design allows the assembly to sit flush or inset into custom fabricated fender panels, eliminating protrusions that interfere with aerodynamics or panel gaps. At just 1.17 lbs, the compact footprint (6.25 x 3.9 x 7.15 inches) makes this solution ideal for space-constrained engine bays and custom vehicle layouts where every inch matters.

Fabricators, restoration shops, and performance builders benefit most from this kit's modular design and finish options. The black powder coat integrates seamlessly with modern and vintage aesthetics alike, and the recessed mounting approach suits aluminum, steel, or composite fender repairs. Installation requires basic metalwork to cut and mount the assembly into your specific fender opening; compatibility with your fuel system's neck diameter and threading should be verified during planning. This is an essential component for anyone serious about integrating OEM-quality fuel access into custom bodywork.