Questions & Answers
Questions: Can you tell me how this gas cap is vented?
Question By: Chase on Jan 4 2022 5:51 AM
There is a check valve under the cap. You can see it in the images.
Answer By: Willys Jeep Parts Tech on Jan 4 2022 5:24 AM
Questions: Is there a LOCKING GAS CAP that fits the under the seat tank in my 1955 CJ5 ?
Question By: Jim Bertzyk on Dec 9 2021 10:56 PM
Sorry I dont believe a locking one is available.
Answer By: Willys Jeep Parts Tech on Dec 10 2021 5:49 AM
Questions: do you know where i could get a locking gas cap for and under seat tank cj 6 please i appreciate
Question By: roberto guzman on Mar 28 2021 10:14 PM
Sorry, that is not available.
Answer By: Willys Jeep Parts Tech on Mar 29 2021 5:44 AM
Questions: Is this the cap for fit the plastic tank #: MTS-0005 and what tie down straps are needed for tank MTS-0005? will I need an electric fuel pump for this tank?
Question By: Gary Faulkner on Feb 11 2021 10:08 PM
Yes, the 640594 is for that tank. Your oringal strap or A1472K is the correct strap for it. Thanks!
Answer By: Willys Jeep Parts Tech on Feb 15 2021 6:03 AM
Questions: Will this gas cap work with the plastic reproduction under seat tanks?
Question By: James Williams on Aug 6 2020 5:50 PM
As long as your plastic tank takes the original caps it should no problem.
Answer By: Willys Jeep Parts Tech on Aug 6 2020 12:26 PM
Questions: What are the dimensions of this product?
Question By: John Deddens on Jul 23 2020 8:42 PM
Please email email@example.com and we can take any exact measurements you need.
Answer By: Willys Jeep Parts Tech on Jul 24 2020 6:12 AM
Questions: About to order a new gas cap; the black gas cap for a '61 CJ5 (Item No. 640594) is vented, correct?
Question By: Mike Kaszuba on Jun 24 2020 9:01 PM
Yes, it is vented. Thanks
Answer By: Willys Jeep Parts Tech on Jun 29 2020 4:51 AM
Questions: My fuel bowl will not stay full, I have a 1968 jeep with F-134 eng and fuel tank mounted under the seat. I have a new fuel tank, new fuel pump, and new fuel line, seems to be vapor locking can a faulty fuel cap cause this?
Question By: Hal Anderson on Nov 8 2019 8:05 AM
The fuel bowl typically doesnt fill up all the way. But i would for sure use a vented gas cap.
Answer By: Willys Jeep Parts Tech on Nov 8 2019 6:04 AM
Questions: The ad says the gas cap is chrome but in the photo the cap looks black, so is it chrome or black?
Question By: George Mace on Jul 18 2019 1:21 PM
Just a typo. Its black. It will be updated shortly. Thanks!
Answer By: Willys Jeep Parts Tech on Jul 18 2019 8:46 AM
Questions: Is the gasket in this cap compatible with gasoline containing alcohol?
Question By: Mike Wakefield on Jun 20 2019 2:26 AM
Yes, that is correct.
Answer By: Willys Jeep Parts Tech on Jun 20 2019 5:36 AM
Questions: Is this 640594 gas cap vented. I need a non-vented gas cap. I cannot get the fuel to stop leaking when on hill slanting to cap.
Question By: Scott on May 16 2019 11:38 PM
908593 is non vented currently.
Answer By: Willys Jeep Parts Tech on May 17 2019 5:29 AM
Questions: Is this the correct Gs Cap for a Willys CJ3A 1951 ? Thank you.
Question By: Bruno on Jun 11 2018 5:54 PM
Yes, that is correct.
Answer By: Willys Jeep Parts Tech on Jun 12 2018 6:03 AM
Questions: I have a 71 cj5 with the small fill neck, 1.5" will this work for this model? Thanks
Question By: Jim on Mar 1 2017 10:51 PM
If you are an under the seat gas tank this is the proper cap. These do not work for rear mounted tank.
Answer By: Willys Jeep Parts Tech on Mar 2 2017 5:52 AM
Questions: I am needing the gasket that fits this cap. Do you sale them separate? Thanks
Question By: David on Mar 5 2015 12:00 AM
Sorry you will only find complete gas caps on this vehicle.
Answer By: Willys Tech on Mar 5 2015 12:00 AM
Questions: 54 cj3b will this fit the 3 inch opening on my tank?
Question By: Daniel on Sep 1 2014 12:00 AM
Yes this is proper for the CJ-3B.
Answer By: Willys Tech on Sep 2 2014 12:00 AM
Questions: Is this cap vented?
Question By: Steve on Apr 19 2013 12:00 AM
Yes this is a vented cap. It does have a check valve.
Answer By: Willys Tech on Apr 19 2013 12:00 AM
Questions: i have the cap for a 1958 jeep willys cj5. do you sell the Gasket only by itself?
Question By: Heck on Jul 7 2011 12:00 AM
I dont have just the gasket. You can make it locally out of paper gasket material.
Answer By: Willys Tech on Jul 7 2011 12:00 AM