Από μαγνήσιο είναι κατασκευασμένος ο Ν52 Βαγγέλη, ο Ν54 είναι αλουμινένιος
"Surprisingly the engine block of the N54B30 is similar to the older generation BMW M54B30 engine - all aluminum with cast iron cylinder liners. This is because the newer N52 aluminum-magnesium engine block was not deemed as suitable for turbo-charging with the above-mentioned engineering goals. As a result, the N54B30 is physically heavier (195 kg/429 lb) than the very light (161 kg/354 lb) N52 engine. This also explains why the engine block size is identical to the older M54B30 at 2979 cc/181 in³ instead of the 2996 cc/182 in³ of the new N52B30 3.0L engine"