Does anyone happen to know a Part# for these? Thought they were all the same size but apparently they aren't Two I tried were either too thin or the one that was big enough had too long a stem.... I'm wondering if this is it??? Four Seasons 26784 Cap & Valve Air Conditioning System Seal Kit. Would like to know before I order it...

 

the kit you listed should do :
2004 Mercedes SL Class
With R-134a Refrigerant

but JIC, here's the low side valve on fleabay :
Mercedes R172 W203 W204 W209 Santech A C Schrader Valve Core Low Side 0008320285 | eBay

and the high side ( same vendor ) :
http://www.ebay.com/itm/Mercedes-W202-W203-W209-W220-W221-W463-S600-A-C-Service-Valve-High-Side-SANTECH-/170808608324?vxp=mtr&hash=item27c4fc8644

 

BE absolutely sure your accessing the right port for the kit/service your doing. Those recharge kit cans were (at lease since I last researched them) never designed for connection to a high side pressurized system. Safety first!




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