“O” ring for air box housing

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C 20 CCO
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“O” ring for air box housing

Post by C 20 CCO » Tue Dec 11, 2018 8:25 pm

I noticed sometime ago that my “o” ring found underneath the air box sealing the join to the carb is missing. The believe the part number is 037129625a but I cannot find a supplier anywhere.

Does anybody know where I can get one from, maybe a parts supplier, i’ve tried a few but drawn a blank. I was wondering if a length rubber fuel hose might work if I could find the correct dimensions for a correct fit. That’s desperate measures for you.

Tried eBay but not prepared to buy the whole air box, for ££££££.


kind regards,

Dave.

To be old and wise......
You must first be young and stupid!

In the garage : 2005 Volvo V50 2L D
2003 Fiesta (uncle fester) TDCI in jewel green
Prized possession- 1991 GT11 in Pearl green.

GT_II
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Re: “O” ring for air box housing

Post by GT_II » Fri Dec 14, 2018 12:06 am

I searched online for a NOS one last year, but other than a lapsed ebay listing (I think from USA), could find none. It is square section rather than round, as far as I know. There's a complete filter box for local pick in Colchester on ebay at the moment - starting bid £2.50, but I don't know if the o-ring is present. Also a seller posting from Germany - around £28 or best offer all in - again, I can't see if the o-ring is present.



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james butler
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Re: “O” ring for air box housing

Post by james butler » Fri Dec 14, 2018 9:50 pm

i would just order a custom large o ring theres lots of places that will make one.
i have the origenal square oring but i have a weber carb and it doesnt fit down tight onto the carb properly.
so i made a gasket from some thick rubber but did think it could do with a large thick o ring


I dont mind project cars but I HATE SANDING!!!

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C 20 CCO
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Re: “O” ring for air box housing

Post by C 20 CCO » Sat Feb 02, 2019 3:47 pm

I work with autoclaves and the guy who comes to service them changed the door seals. I grabbed the old door seal cut a length off and fitted it to the airbox; seems to fit perfect. It’s resistant to heat and oils so the jobs a good un! Will have to see if the small amount of oil that used to sit on top of the carb is no more.


kind regards,

Dave.

To be old and wise......
You must first be young and stupid!

In the garage : 2005 Volvo V50 2L D
2003 Fiesta (uncle fester) TDCI in jewel green
Prized possession- 1991 GT11 in Pearl green.

WreckTangle
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Re: “O” ring for air box housing

Post by WreckTangle » Wed Feb 06, 2019 11:50 pm

I had the same problem and made my own replacement using square cross section cord from here:

https://www.polymax.co.uk/rubber-cords/ ... bber-cord/

It’s easy to join using a blob of super glue. Unfortunately, I cannot remember what size was the best fit. I bought various between 4.0mm and 6.0mm and tried them. It may have been the 5.5mm, but I honestly cannot remember. My car has a Weber so I may have needed chubbier cord than OEM.



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C 20 CCO
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Re: “O” ring for air box housing

Post by C 20 CCO » Mon Feb 18, 2019 4:36 pm

Thanks for that, if my finding a problem in the future; i’ll be sure to source something like you have used. :good:


kind regards,

Dave.

To be old and wise......
You must first be young and stupid!

In the garage : 2005 Volvo V50 2L D
2003 Fiesta (uncle fester) TDCI in jewel green
Prized possession- 1991 GT11 in Pearl green.

scirocco_ne
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Re: “O” ring for air box housing

Post by scirocco_ne » Fri Apr 19, 2019 12:45 pm

If you have something to make the o ring seal some electrical wire in the groove below helps to pack it out as a quick fix. Mine was there but thin so i packed it out and it seals way better.