has financial motivation to ensure parts function reliably. Ensuring part quality is critical when those parts impact reliability of vehicles currently being sold or vehicles that the OEM has warrant obligations for.
Nissan probably hasn't had financial motivation to supply reliable MAFs for probably 15-20 years. Judging by the difference in visual appearance, I'd assume the inventory of MAFs produced in the 90s and early 2000s was consumed and they made another production order (obviously with some different tooling). If this was done after their financial ties to the Z32 were gone, they would have had zero motivation to ensure anything above bare minimum quality.
