A set of cylinder head bolts with strength class 12.9 for your M103 or M104 turbo conversion. The bolts can be used with original cylinder head gasket or MLS gaskets.
Notes
The bolts are tightened in steps with the following torques: 45, 65, 85 Nm. After the engine has been brought to operating temperature and has cooled down again, retighten with 125Nm.


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