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  #1  
Old 10-15-2020, 12:16 AM
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Oil filter pipe o-ring sizes on '83 240D?

I just changed the oil filter on my '83 240D. The filter housing cap has a pipe that runs down through the filter, and that pipe has two thick, tiny o-rings on its end. Does anyone know the proper sizes for those two? They are definitely different sizes, and my local NAPA has neither size.

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Old 10-15-2020, 03:30 AM
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Bah, can't post a link....

Described as part # 0159979448 at ********AZ
DPH Oil Filter Canister Bolt Seal; For Tube at Oil Filter Canister Lid; 6x10x2mm
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  #3  
Old 10-15-2020, 12:16 PM
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Thanks, Gotta. Found that size on fleabay, https://www.ebay.com/itm/Viton-FKM-O-ring-6-x-2mm-Price-for-10-pcs/202555219325?hash=item2f293b5d7d:g:lu8AAOSwvylbW15y, seven bucks for a ten-pack.
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'75 John Deere 450C (times 2)
'83 240D plus parts car
'87 F350, 6.9L IDI
'89 F350 crewcab, 7.3L IDI
'89 F-Superduty, 7.3L IDI
'91 F-250, 7.3L IDI
'91 F-350, 7.3L IDI
'94 F-350 Crewcab, 7.3L IDI
'94 E-350 Ambulance, 7.3L IDI
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Old 10-15-2020, 02:08 PM
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I try to buy from this forum's sponsor. They deserve our support. If they disappear so does this invaluable forum. I feel the same way about the gentleman up in Bellingham, WA.
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Old 10-15-2020, 03:21 PM
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I agree, Mark. I just placed a $100 order with our hosts.
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'75 John Deere 450C (times 2)
'83 240D plus parts car
'87 F350, 6.9L IDI
'89 F350 crewcab, 7.3L IDI
'89 F-Superduty, 7.3L IDI
'91 F-250, 7.3L IDI
'91 F-350, 7.3L IDI
'94 F-350 Crewcab, 7.3L IDI
'94 E-350 Ambulance, 7.3L IDI
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  #6  
Old 10-15-2020, 05:06 PM
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Autozone sells a metric assortment of O-rings. I believe there is 10 each 6x10x2mm O-rings in it. I posted on this a long time ago with a pic. There is also a thread on the size and there is another size you can use on the top O-ring.
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  #7  
Old 10-15-2020, 08:19 PM
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At home on my home computer where I have the notes:

Prechamber Ring Removal Tool and Prechamber Puller For Sale - PeachParts Mercedes-Benz Forum

Autozone sells a Metric O-ring assortment made by Dorman for less than $8. (this price was like 5 years ago so it is an old price.)
Dorman Metric 172 piece O-ring Value Pack #799-450
In it are 24 of the 6mmIDx10mmODx2mmW O-rings that you need for the bottom of the Oil Filter Stem: enough for 12 O-ring changes if you use the same sized O-rings each time you change it.

On 617.952s you can substitute a 7mmx11mmx2mm in the upper groove on the Oil Filter Stem instead of the 6mmx10mmx2mm. If you do that you have enough O-rings for 24 O-ring changes. (This was suggested by another member and I did it and it works; since I bought the kit I do this on mine.)

The 10mmIDx17mmODx2.5mm in the kit fits the bottom of the Fuel Filter Bolt; you get 24 of those in the kit.
The 14mmIDx19mmODx2.5mmW appears to fit the large upper O-ring (if you have the Filter Bolt that takes 2 O-rings) but I have not actually tried that yet.
You get a total of 172 O-rings in various sizes.

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