Lingenfelter offers this premium quality 176 degree thermostat for the the factory original equipment production stock 195 degree F thermostat found in the 2006 to 2009 Cadillac STS-V and XLR-V.
This is a direct drop in replacement with no modifications needed and includes the rubber seal.
Reducing coolant temperature will help produce more horsepower and improve your performance and driveability. The thermostat is an easy to install component and requires no modifications
Click For Thermostat Specification Chart