2006-2008 997s have the sealed, non-serviceable IMS bearing (different from the 1999 dual-row 996.1 design). The community-recognised mitigation is to remove the outer main seal during clutch replacement — exposing the bearing to engine oil for better lubrication. …
IMS bearing on 997 — sealed bearing and the outer-seal removal trick
Porsche 911 (997) · mechanical