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Discussion Starter #1
Hello guys, I'm trying to order a new thermostat but I'm getting conflicting reports on whether or not this will fit. So do all R171's take the same style of thermostat? I just want to know if it will work before I start tearing into my motor.


Wahler Thermostat:
http://www.partsgeek.com/catalog/2005/mercedes/slk350/cooling_system/thermostat.html

And this one has the same part number "W0133-1778058" but says only 2006 to 2011:
http://www.partsgeek.com/43y5jv6-mercedes-ml350-thermostat.html?utm_source=shopzilla&utm_medium=pf&utm_content=wc&utm_campaign=PartsGeek+ShopZilla&fp=pp&utm_term=2006-2011+Mercedes+ML350+Thermostat+-+Wahler



Thanks guys!


Edit: Never mind, I'm an idiot. How do you delete threads?
 

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Nostromo, yes there are 2 different p/n's, depending on the engine #.

And grovefromnh, the price for the Wahler is a good price. It costs more at MB for the same tstat... and no, it doesn't include labor. The MB tstat is NOT the tstat we've known and loved previously; it's WAY more complicated AND expensive :(
 

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Discussion Starter #5
Yup, got mine replaced and works great now. Gets up to temp like new! It was like a 4 hour job.
 
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