Fastech fuel Cap ....
#3
Registered
Joined: May 2015
Posts: 26
Likes: 0
From: shadyside, ohio
Wow, somehow I lost my cap off of my 1999 Fastech 312. I bought one off of ebay, it does not fit, mine has slightly larger threads, and finer threads, I emailed formula, they told me the supplier of the cap I bought from ebay was actually supplied by them, Formuala, and they could not help me because they did not have a fastech there to look at!!
So I am in need of either a cap or the thread size so I can find something that will work.
So I am in need of either a cap or the thread size so I can find something that will work.
#6
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Joined: Aug 2013
Posts: 479
Likes: 20
From: Lake St. Clair, MI
I went to West Marine and found a matching thread, in a stainless cap, but it was for waste (bigger size capo). I had a machinist machine it down to fit.
I didn't care for the plastic one, but don't have it as the previous owner lost it.
I didn't care for the plastic one, but don't have it as the previous owner lost it.
#7
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Joined: May 2015
Posts: 26
Likes: 0
From: shadyside, ohio
The caps that are for sale on Ebay did not fit my 1999, Fastech 312, formula supplies the caps that are sold on ebay, and Forumla, via email, had no answer. And yes mine is original. The opening, was 1.85 inches measured with an inside caliper, or 1-17/20, obviously an odd size.




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