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Where is the thermostat on a 99 Chrysler 300 M

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The thermostat is located on the lower left side of the engine near the front.

The thermostat is on the inlet side of the water pump.

Check out this link for more help!

Good luck


Posted on Jul 19, 2008


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Jacquelin! The thermostat n a 3.5 Chrysler 300M is on the block right next to, and toward the front of the engine by the oil filter. Yes, that sems a bit strange, but then I'm not a bit surprised about this engine any more. As the big radiator hose leaves the radiator finding its' way toward the block, it terminates at a traditional "goose neck" at the block behind the power steering pump- only accessible by removing the oil filter and using an extension and a u joint BUT FIRST: lower the anti freeze in the system by draining some fluid. But anyway- THAT'S where it is. Have fun, fix it up and GO!

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Depending on engine:

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Please let me know how I may assist further.

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The correct way to replace the thermostat would be to replace the actual part with a new one, not from a junkyard or anything and put a new gasket in with the new part.

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