Fuel Tank 4 Gal Alum & Fuel Cooler Black

The Fuel Tank 4 Gal Aluminum & Fuel Cooler in Black (RCI 2040MD) is purpose-built for high-performance automotive applications where fuel temperature management directly impacts engine efficiency and reliability. Whether you're running a dedicated race car, a heavily modified street machine, or a vehicle subjected to sustained high-load conditions, this compact 4-gallon aluminum fuel cell addresses a critical gap in factory fuel system design. Fuel temperature rise under aggressive driving reduces octane rating and can cause vapor lock, detonation, and power loss—particularly in turbocharged or supercharged engines where fuel density and thermal stability become mission-critical factors.

Constructed from lightweight aluminum, this fuel cell weighs 14.83 lbs and integrates an internal fuel cooler design that circulates fuel through a thermally efficient pathway before it reaches the fuel rails. The black powder-coat finish resists corrosion and UV degradation, while the compact 18.25 x 14.5 x 26-inch profile accommodates tight engine bay or trunk mounting configurations typical of performance builds. The integrated cooler function works passively through surface area exposure and active circulation loops, reducing fuel temperature by 20–30°F under sustained load—a measurable improvement that translates to more consistent fuel pressure, cleaner combustion, and extended injector lifespan on systems running premium or E85 fuel blends.

This fuel tank is ideal for street-legal drag cars, time-attack competitors, and street machines with aggressive tuning maps that demand fuel system upgrades beyond stock capacity. Installation requires proper bracket fabrication or use of RCI's mounting hardware (sold separately) and professional fuel line routing to avoid pinch points or heat sources. The 4-gallon capacity suits short-duration events or vehicles with optimized fuel consumption; builders planning extended highway use or fuel-thirsty big-displacement engines may benefit from stacking multiple cells or stepping up to larger RCI tank options for redundancy and range.