This new Ram/Dodge Cab & Chassis tank is made of our famous military grade, cross-linked polymer material. It's at least ¼" thick and built to outlast all competitors. It's tougher than steel and more durable than aluminum. Like all fine TITAN products, this new design has undergone extensive testing. Our legendary products are so tough and well-proven that we back them with a Lifetime Warranty. Our mid-ship, replacement fuel tanks utilize the truck's stock/OE sending unit. An aftermarket or upgraded sending unit is not needed or required in any way. Tanks come as complete kits with everything needed for installation.