where does a fella find one of these ? mine is cracked and glued but i need to adjust the modulator and im sure the cap will come off in two peices this time. i checked the parts breakdown somewhere on this forum and its not listed. we have no dealer within150 or so miles so purchasing one is kinda a problem. thanks in advance.
davidh
1983 300d turbo

I hear that FASTLANE carries them here on this site. They're cheap.. order a spare or two.

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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.

Hi Davidh

I have one off of a modulator that I replaced. It's not from an `83, but I bet it's the same. The cap seems to be in decent shape and it's free. Send me a private message through this site with your address and I'll get it in the mail. I'll send the key too, just in case.

Paul

This happened not too long ago. For some reason, it is listed for the w126's but not the w123's. Try this:http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1V61D44OW1V61D4BO7&year=1983&make=MB&model=300-SD-002&category=J&part=AT+Modulator+Cap

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Sam

84 300SD 350K+ miles ( Blue Belle )

Also dealer item. $2 or so.
Fastlane has it too.

And.... they do need to be vacuum tight.

I actually made my own.

Model car tire and a dime as a cap, then some black RTV.

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250

thanks for the help. i knew someone would come up with a creative fix too. im going to attempt to halt the HARD shift on a low mileage car this wekend and mine has a repaired crack already.
davidh