After three bad ones in a row, I stopped buying MTC brand "monovalve repair kits" from a well know online parts supplier in Arizona. Since, I have salvaged monovalve units from yards and found they do work.

I hope this helps,

__________________
Will



72 280SEL
85 300CD 288k
00 E320 Wagon 4-matic 100k
11 E350 Wagon 4-matic 45k

73 VW Westfalia Camper
67 VW Westfalia Camper

66 Porsche 912