The SPECTRA PREMIUM INDUSTRIES, INC. NS4 Steel Fuel Tank is engineered to provide a reliable and durable fuel storage solution for single-chamber SUVs. Designed with precision, this 21-gallon tank offers enhanced fuel capacity without compromising on space efficiency. Constructed from high-quality steel, it ensures resistance to swelling and sagging, even under prolonged exposure to fuel and elevated temperatures. The tank's thin wall design maximizes usable volume within the vehicle's packaging space, offering approximately 8% more capacity compared to equivalent plastic tanks. Additionally, the steel material's dimensional stability allows for reduced clearances to the surrounding vehicle environment, potentially increasing tank volume. This design also facilitates easier integration with internalized valves, reducing the clearance between the tank shell and the underbody. Spectra Premium's commitment to quality is evident in their manufacturing process, which includes rigorous testing to validate performance under extreme conditions. The NS4 tank is engineered to meet the demands of modern vehicles, providing a robust and efficient fuel storage solution that aligns with Spectra Premium's reputation for excellence in automotive components.