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engine head aluminimum, steel bolt, corrosion minimum
N52 engine block magnesium jacketed, aluminimum bolt, corrosion minimum
2006 N52 valve cover is magnesium, aluminimum valve cover bolts
Post 2006 N52 valve cover plastic, steel valve cover bolts.
Last edited by PhaseP; 09-28-2021 at 12:37 PM..
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