Correct Gas cap? Leaking? Fumes Etc?

[ja17]

I believe all W113 cars came with a chrome locking gas cap from the factory. The exact same caps were often used behind the gas doors of Mercedes sedans of the era. However since they were hidden in this case, they were left in their natural gray pot metal / zinc color and were not chromed. Often times the expensive original chrome gas caps have been replaced with the less expensive and more plentiful sedan caps over the years (various similar or dissimilar versions).
In addition later Mercedes gas caps also fit earlier cars and are often used as inexpensive substitutes. So you find these being offered for sale just to simply perform the function without much expense.
Early Mercedes gas tanks had no vent built in so gas caps were vented. When fuel tanks were produced with their own venting systems, then the gas caps could be non-vented for safety and polution concerns. I am not eactly sure when these changes were made.
I recently paid $200.00 for an original used 190-SL chrome locking gas cap and considered myself lucky to even find one. The only replacement cap supplied by Mercedes for a 190-SL is a locking W113 chrome gas cap, which fits but is not correct! Some photo documentation would be nice at this point.


Joe Alexander
Blacklick, Ohio

[Naj ✝︎]

Here is a picture of a Late 280 cap - one key fits all type.
Note cork seal ring.


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naj

65 230SL
68 280SL

[Richard Madison]

K: I will clear up your confusion...here's the final answer...

I previously told the story of the two MB chrome gas caps. If you want to read about them, go to the link below.

I have a chrome, locking, MB gas cap that looks exactly like the original correct 113 cap. It costs $85, about half of the other cap.  This less expensive cap has a smaller key, otherwise identical. It is unvented and DOES NOT LEAK!

Call Tom Hanson ("halfviking") and get the cap already!

Richard M
http://index.php?topic=566

[JamesL]

k

I changed the gasket/seal ring (to a rubber) on mine and it is now sealed - as in no leaks over my nice chrome. The cap is slightly harder to get on the car but it does not leak

So I have a spare cap (with 1 key)

[John A. Dean]

I also had the grey cap from a sedan on my SL.  It didn't leak but also didn't look right.  A new one is available from MB for way too much money.  Ones from old cars looked pretty ratty and their cork seals wouldn't seal anything.  I found a chrome, non-keyed non-vented cap that fits perfectly, looks fine and doesn't leak, at Pep Boys for seven bucks.  It won't win any concours but looks right on the car.  One more alternative solution to your problem.

1969 280SL, manual, MB TEX, green/cognac

[Dick M]

Being too cheap to buy nice new chrome cap I buffed out the old gray one.  Requires a little maintenance but looks much better.


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Dick M
1970 280SL

[k]

Finally ordered a new gas cap #000-471-47-30 from Calibre; its beautiful.  Filled up a tank; put on the cap, turned it tight & locked. No leaks & no fumes!

Price seems to have been lowered bu MB; as it was $60 all in; where as previously it was $135.  I specificall asked for -47-30 model, as opposed to the -2030 replacement.

Very nice, with black mercedes key; polished chrome and nice Star logo!

THanks for the all the advice!

[n/a]

MB raised the price on these as of May 3rd. It more than doubled !!


tom in CA

[blairwag]

I bought my locking MB cap last summer from Calibur motors. Tom Hansen cooked me up.  It was $89.00 at the time. I was very pleased. I saw the same cap go on eBay for $125.00.

--
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William Blair Wagner: blairwag@earthlink.net
Education is not always knowing the answer,
...but rather knowing where to look for it!
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