Filler Neck assistance

[Girdylee65]

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New to the whole forum site here but. My truck is a 1979 C10 longbed. I'm not sure what year filler neck is bolted into the box since the bed is from a different truck. So I need help identifying the style I have so I can purchase the correct filler hose to attach to the fuel tank. Sorry if this is posted in the incorrect section, couldn't really identify the correct place to upload this.

 

[Charlie]

 

[bucket]

I'm guessing '83. It was the same design as the '79-'82, but used a larger diameter hose like the '84 and later style fillers.

Or maybe the filler used a larger hose in '81-'82 as well, I can't remember for sure. At any rate, it's post '78 and pre-'84.