After more than twenty years, the six stud bolts are almost always "at the end of their life" and urgently need to be replaced. This set is for all 6-cylinder Opel Cih engines with the triangular flange, as well as the 3.0i-24V through 4.0i-24V engines, and includes the corresponding copper nuts. Also compatible with the C24NE / 2.4-liter exhaust manifold. Six pieces each for both exhaust manifolds leading to the Y-pipe. Great :-)
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