SDPC SD160LS1 - 160 Degree Thermostat for LS1/LS6 Engines

Take control over your engine coolant temps by changing to an SDPC lower temp thermostat. These thermostats open at a lower temperature than your stock thermostat, getting your hot coolant to the radiator sooner. This is an important modification to make on any engine making more power than stock, from a cam only setup all the way into supercharged build. We offer both 160 and 180 degree options to fine tune your cooling system to your own needs. LS1 LS2 LS3 Bolt Spacing 3 in 3 in 3-1/16 in Water Pump Opening Diameter 2-1/16 in 1-7/8 in 1-15/16 in Depth 1-5/8 in 1-11/16 in 1-15/16 in Housing Opening Diameter - 2-5/16 in 2-3/8 in