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Old 06-25-2003, 12:45 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,126
Not sure about the M104 but the M103 has an o-ring at the union of one of the cabin heater pipes and the water pump block.

No need to replace the belt tensioner. I assume the tensioner shock absorber is pretty new as well. But you can replace that anytime.

95 S420
91 300SE
87 300SDL
83 300SD
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