1945-1964 Jeep CJ 2A, 3A,and early 3B up to serial #39838. This is an under the "passengers" seat gas tank with a 5 screw sending unit hole and a straight filler pipe. The pickup tube comes installed on the top of the tank. In-line fuel filter required. Includes new 5-hole sending unit gasket. Dimensions 25" x 18 1/2" x 6 1/2". Replaces # 640685-R.