2011 Buick Regal 4-door Sedan CXL RL3 Engine #7794041 Read Also: 2013 Buick Regal 4-door Sedan GS Engine #7962400 2012 Buick Regal 4-door Sedan GS Engine #9714555 2011 Buick Regal #7111247 2014 Buick Regal 4-door Sedan Premium II FWD Engine #8792319 2011 Buick Regal #9214178 2011 Buick Regal #9426937