238203 - Miller 12-Gallon Replacement Fuel Tank Assembly with Sender

Technical Overview of the Miller 238203 Fuel Tank Assembly

The Miller 238203 is a genuine OEM replacement fuel tank designed specifically for select Miller engine-driven welding generators, including the popular Bobcat and Trailblazer series. This component is critical for the safe and efficient operation of the power source, providing a secure reservoir for 12.0 gallons of fuel. The tank is manufactured from high-density polyethylene (HDPE), a material chosen for its exceptional resistance to chemical corrosion from diesel and gasoline fuels, as well as its durability against vibration and impact common in industrial job site environments.

One of the primary technical features of this assembly is the inclusion of the fuel level sender unit. The sender is pre-installed, calibrated to match the impedance requirements of the welder's front panel fuel gauge. This integration simplifies the replacement process, as technicians do not need to salvage the old sender or perform complex calibration procedures during installation. The tank geometry is molded to precise OEM specifications, ensuring that it fits seamlessly within the machine's chassis without interfering with other internal components like the generator stator or engine block. It features the correct mounting points and indentations for secure fastening, preventing movement during transport.

The 12-gallon capacity is engineered to provide an optimal balance between runtime and weight. Maintaining the integrity of the fuel system is paramount for engine longevity; this tank ensures a sealed environment that prevents contaminants from entering the fuel supply. The seamless molded construction eliminates the risk of seam failures, a common issue with aftermarket or fabricated metal tanks. The assembly includes the necessary openings for the fuel cap (sold separately), fuel pickup tube, and return lines, adhering to the standard plumbing layout of Miller's industrial engine drives. By utilizing this genuine part, operators ensure compliance with original equipment safety standards regarding fuel containment and spill prevention.