Refresh the after-axle fuel tank on 2000-2010 Ford cab chassis diesel trucks with S&B's 40-gallon crosslink-polyethylene replacement tank. Built for F-350 and F-450 cab chassis applications with 7.3L, 6.0L, or 6.4L Powerstroke engines, this tank matches the factory 40-gallon size and shape while avoiding the delamination problems associated with OEM steel tanks. It reuses the OE sending unit, factory straps, and skid plate, and maintains the original ground-clearance profile. Notes: this tank does not fit 1999 trucks, is not transfer-pump ready, and auxiliary tanks may affect S&B warranty coverage.