If your Jeep CJ's gas gauge is acting crazy—stuck on empty, jumping around, or just not reading right—chances are your old fuel sending unit has given up. This MTS Company CJSU-20 is a direct, bolt-in replacement designed specifically for the 1981-1986 Jeep CJ models that came with the factory 20-gallon plastic fuel tank. It replaces the original part number 5362090. The sending unit is what sits inside your gas tank and tells your dashboard gauge how much fuel you have left. This one is built to match the original factory specifications and ohm range (8.5-10.5 ohms when full, 70-80 ohms when empty), so it should work perfectly with your stock gauge. No wiring modifications needed. Installation is pretty straightforward if you’re comfortable dropping the gas tank. Just make sure your Jeep is the right year and has that plastic 20-gallon tank. A simple fix to get your fuel readings back to reliable.
