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Discussion Starter #1
Hey everyone! Been a few years since I've been around but I have a 260z and a 80 280zx, and my dad has a 78 280z and a 82 280zx. Had an oak tree fall on the roof of my 80 about 3 years ago which pretty well rendered it a parts car and I kind of got discouraged for a bit.

Probably 6 months ago I walked past my fathers 82 and smelt gas - looked under it and there was a hole rotted in the tank. Hadn't had time to mess with it but I decided to pull the tank last night. Inside of the tank is extremely rusty. About 2 years ago I put a different sending unit in it and the tank was spotless, so whatever caused it is a fairly recent thing. I'm leaning towards the seal on the gas cap being the culprit, allowing water down the filler neck. After all, it is a 40 y/o piece of rubber.

I am going to pull the tank out of my 80 (fingers crossed that it isn't in bad shape) and put in the 82.

Am I the only one that's wanted to replace this? Anyone know of a source or a part number? I looked around a bit and only found used caps for sale.

Thanks!
 

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Discussion Starter #3

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Sorry, missed the ZX portion.

The Nissan part number is 17225-P7100 but appears to be discontinued.

This appears to be your best bet for non-used:

https://www.ebay.com/itm/1980-1983-Nissan-280ZX-Fuel-Filler-Locking-Gas-Cap-and-Key-OEM-NEW-17251-P7900/201329994587?epid=1111273655&hash=item2ee033eb5b&_trkparms=ispr%3D1&enc=AQAEAAADMKvsXIZtBqdkfsZsMtzFbFsbX3WcW5fmB%2Fx7ZbaZTyexElaqqmFjTloVsMveIeRfWyfLNlXPYxHDWE1QbmOgC24orylP1RMVe14RWId9CWnRy8nMhDRxbDdTkSROIT0CpPL6ccHE5kE7sJP3J2VuMvUBhFd0rwpOhzqDIcoNT0SVO%2Bt80PBywtVk9%2FO8s1fovaSd4A4ghWVMNG6qKojw%2BH%2BUIZsq0GKeLFcEIzCKmENenNtLWJAxB5oe92aFb6B%2FQl%2BwzYuKc3smg9qEzN4s2Onr9xidrsUJf05Iif8stz3BaYWuOcN5A%2BaJ0W3Ru%2BZ7VTSOatIlzi5x0U6p15GBrEeaFbAOFsd6SLGlmgb%2BM%2FDA9R6Oj3DJ9LzwIrb0LeHlaGrFMP51eG5dyCRYyxaXNAuu5vjqVoCx502%2BnaSOmp1qW1mdHA1W%2F8OtvYV0gVAXRmMKdCfRsVX6QpBr1z0q9aFdFM9fKGc%2ByxgC%2B3fJ7b4oAhrp2Eqnm3f6u0eoKaIZwB2q3ko8urRd4mqJZSFCNminY%2B3Fl05ZtW2N1p8D5PTUOqSATFaOG4g%2BNSvwTZB0d12YBH0LJ3%2BAu%2FyWS13ufArLlRP95UNnnv%2FYBZQgG24U0Kv0NyfrPKhnPo07uboyuzP%2F6lJMknADoT3tUvUBx2ljRM%2BWfN6cRNtgR5TC4XIPUmT9a6j0ljVEnpr9ZErz7wkHkZ0TESWIAxmS%2BsZxVoy5VW2P1LTpphp3TNzFsulvqaQmgplZIlOA1clc5tjLl3Ae0tLrbEGuOd8VIPvjrvUv9xizVbRYt0XxrXjCthmWtABKBfSp%2Ba4ZtDGeEHO%2Fnlx%2BRuS58WBe%2FTMbbQIqz3LKzQXXvCC0FmaC3jJ%2Bn2OcE%2BRGgdvMTzwmb9SWuPmh5pLO0SanVQSThkyKdywwwwHcKwNm9gTln3KJx7p3mTbzb2RUDreInmbvCpmW5UpWfh5rm9LtAz%2BUcHGr0%2Fu3RY67pyPEZcOVHL%2B8i3Bl6RQo%2Bf%2BQVSomIk2l385Lcznad5CA6lgbgKO8PWIkyTMHR5%2BT1U5OijJ0I3OJsATN4E8RU6T%2FDmCViqooIWaDe4%2F2CQ%3D%3D&checksum=201329994587c84e31eab09547b09a8acc5cb3b70094
 

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Discussion Starter #5
Thanks! The one in the picture looks like it just has a typical black rubber o-ring on it. I might pick one up from the parts store and see how that works out before ordering a new cap.
 
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