'71 Duster gas cap question

PlymCrazy

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From my understanding the '71 gas cap was a one-year-only. '71 Duster 340. I currently have a lockable cap on mine and want to replace it with a paintable, original style. Before I start a WTB ad, can you guys confirm this is in fact the case? And if so, will any A-body '71 cap work, or is that yet another unique aspect of the cap?
- Nick
 

PlymCrazy

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If you do not have the extra venting tube in the trunk and only have the filler tube you need a vented gas cap. I believe they make them now aftermarket as well.
I've pulled the trigger on ordering 3x so far from other sources over the last several months. Each time resulted in a return/refund due to unavailability or non-fitment upon receipt. Ordered vented and non-vented both with no success. Began to give up hope thinking maybe it's just no longer available. It's been a while since I checked, but I don't recall having the extra vent tube. But the car does have under the hood what appears to be the early start of emissions, being born in LA. I have parts arrive 2-3x a week for other vehicle repairs I have going regularly at my place, but this one is getting a bit frustrating. But I'll keep trying...
 

toolmanmike

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From my understanding the '71 gas cap was a one-year-only. '71 Duster 340. I currently have a lockable cap on mine and want to replace it with a paintable, original style. Before I start a WTB ad, can you guys confirm this is in fact the case? And if so, will any A-body '71 cap work, or is that yet another unique aspect of the cap?
- Nick
This chart may help. It's a sticky in the fuel forum. Gas Cap chart

Gas Caps by year.jpeg
 

Uncle Bob

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If you do not have the extra venting tube in the trunk and only have the filler tube you need a vented gas cap. I believe they make them now aftermarket as well.
That's the way my 71 is set up.

I've pulled the trigger on ordering 3x so far from other sources over the last several months. Each time resulted in a return/refund due to unavailability or non-fitment upon receipt.
I went through that too. I got my cap from Jeff @ https://521restorations.com/ The rubber seal rips easily but I scarfed one from another cap that I had bought, didn't fit, and wasn't worth returning.
 

PlymCrazy

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I'll post some pics later of what my setup is. Maybe you guys can help me make up my mind on which wrong cap to order again :rofl:

Fair enough?
 

PlymCrazy

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image.jpg

From previous pics and this one, no additional tube. But looks like this has what looks like the beginning of emissions?
 

PlymCrazy

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@toolmanmike is there a way I can move this thread to Fuel and Air? Or is this something I'd need your assistance on? I posted the pics too btw...

- Nick
 

EL5DEMON340

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you need to find the 71 type by the looks of your setup, or if you cant change the fill tube might work
 
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