Hey there! If your car's running hot or the temperature gauge is acting crazy, it might be time for a new thermostat. This little guy controls your engine's coolant flow to keep things at the perfect temp. When it goes bad, you might notice overheating, weird temperature swings, or even coolant leaks. The good news? This aftermarket thermostat from Allmotorparts is a perfect replacement for tons of GM vehicles from 2005-2017. It works with Buick Allure, Lacrosse, Regal, Verano; Chevy Cobalt, Equinox, HHR, Malibu; GMC Terrain; Pontiac G5, G6, Solstice; Saturn Ion, Vue, and way more. Replaces part numbers 131-158, 131158, and 12622410. Super easy to install - just follow the upper radiator hose to where it connects to the engine. Pro tip: If your thermostat has a jiggle pin, make sure it's at the 12 o'clock position during installation. This isn't a genuine OEM part, but it meets or exceeds original equipment specs with premium materials and stainless steel construction. Got questions or issues? Just reach out - they've got your back!