I have a mopar NOS gas tank sending unit 4051398. The part number metal part of the gauge shows 4051336. Someone wrote on the box the applications. That part number supersedes from what I have seen on a internet search so I`m not sure of the exact application. The box is in crappy shape but the gauge looks fine. It had some very small spots of rust that I brushed off. $85 plus shipping.
This part “should” fit ’80 to ’89 F & M bodies. Not sure if it will work in non-fuel injected J-bodies or not. BudW