S&B's 52-gallon fuel tank directly replaces the OEM 31-gallon tank without any cutting, drilling, or special modifications. This makes for a trouble-free, faster installation process. S&B's replacement fuel tank holds 2 more gallons than competitor tanks allowing you to save time, go further, and get more out of your truck! Go big or go home! The S&B Fuel Tank was designed to use the OEM locking ring. This ensures a perfect seal and securely retains the fuel pump onto the tank. S&B Tanks are made out of an extremely strong crosslink polyethylene and backed by our lifetime warranty.