The 2013 Buick Regal has 16 valves.
The 2003 Buick Regal has 12 valves.
The 2014 Buick Regal has 16 valves.
The 2011 Buick Regal has 16 valves.
The 2012 Buick Regal has 16 valves.
The 2004 Buick Regal has 12 valves.
The 2002 Buick Regal has 12 valves.
The 2001 Buick Regal's engine produces 200 hp @ 5200 rpm.
The gas tank on the 2001 Buick Regal holds 17.5 gal..
should be 20.
There are 2 oxygen sensors on the 2001 Buick Regal. One is in front of the catalytic converter and the other is between the catalytic converter and the muffler on the top side of the exhaust pipe.
The 2014 Buick Enclave has 24 valves.