|Porsche 996 986 IMS kit
|5 x stronger NSK Roller bearing.
Stronger center bolt 10 mm VS factory neck area 7 mm
believe to be the problem too.
To prevent oil leak
Dual O-ring cover plate for better fitment.
O-ring in the cover plate.
Porsche 996, 986 from 97-05 roller IMS bearing upgrade kit.