Our MTS Company #0040ES fuel tank replaces the 1945-1964 Jeep/Willys CJ 2A, 3A,and early 3B up to serial #39838. This is an "Under the Drivers" seat 11-gal. gas tank with a 5 screw sending unit hole and a straight filler neck. An in-line fuel filter is required. Includes new 5-hole sending unit gasket. Approx. dimensions 25" x 18 1/2" x 6 1/2". Replaces # 640685. *We have moved the fuel pickup location from the bottom of the tank to the TOP. This means the fuel line will need to be re-routed from the bottom to the top. Any questions about the fuel line change, please contact us via email.