2.5 Filler Cap & Bung - Weld-In Steel

The MEZIERE 2.5 Filler Cap & Bung - Weld-In Steel (PN6501) is a specialized fuel system component designed for custom-built and high-performance vehicles. This product is ideal for applications where precision fuel cell integration is essential, such as in race cars, hot rods, and heavily modified vehicles. It serves as the primary filler neck and cap solution for those who have moved away from OEM fuel doors and caps.

Constructed from durable steel, this weld-in bung features a 2.5-inch opening diameter, making it robust enough to handle the demands of direct welding into custom fuel tank fabrications. The design includes a vented cap mechanism that allows for proper fuel tank breathing during fill cycles, which is crucial for preventing vapor lock under sustained engine operation. This feature is particularly beneficial for high-horsepower builds where fuel demand is constant.

The compact profile of 3.5 x 1.55 x 3.95 inches minimizes visual bulk while ensuring compatibility with ethanol-blended fuels and modern fuel additives. This makes the MEZIERE 2.5 Filler Cap & Bung suitable for a wide range of applications, including those requiring relocation of the filler location or installation of a new fuel cell. Whether building a tube-frame race car from scratch or modifying an existing vehicle, this component provides a clean and secure mounting point.