One problem related to clutch bell housing has been reported for the 2012 Nissan Altima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Nissan Altima based on all problems reported for the 2012 Altima.
Transmission leak in bell housing. Transmission leak 1/10/13. Transmission leak 9/11/13. Transmission leak, internal failure 9/30/13.