Had my coller replace by a Benz dealer and they overe torque the threads. 50 miles later they replace the coller again because of stripped threads. Be careful not cross thread or over torque

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Ricali

03 C240 4matic wagon
95 300E 234,000
7 prior 240;s 5 still going
81 300sd gone
65 230sl gone
49 Studebaker Champion
90BMW convert.167,000
60 Dodge D-100