Zep
The original part although described as "forged aluminium" does look to be two part cast alloy. The cracks and splitting are always on the (casting?) web, which reinforces the impression this was a seam. The modified unit now sold by Maserati appears to be machined from a blank, which is materially bigger in the critical location and finished to a higher standard all over. The part number of the item is usefully unchanged (not even superseded) for ease of location. The price has risen by 300%.
No pictures of the new style item.
(how are we supposed to differentiate between the old £400 part and the new £1200 one? Toffee versusTitanium)