Jeep Willys Gas Tank 1947-1963 - 0018 1947-1963 Willys Steel Body Wagon/1948-1951 Willys Jeepster MTS replacement tanks are molded in one piece and have no welds or seams to split apart and will never rust through. Made of High Density Cross Linking Polyethylene, a high strength material with superior puncture resistance. Will not crack even at 160 degrees below zero. Made in the USA