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MotorRad CST Thermostat 657-203 Standard; OE Replacement; Temperature 203F; With Seal

<ul><li>High Grade Stainless Steel And Copper Construction</li><li>Consistent And Precise Response To Cooling System Needs</li><li>100 Percent Tested And Calibrated</li><li>Meets Or Exceeds OEM Standards</li><li>Original Equipment Design For Worry-Free Direct Fit Replacement</li><li>Manufactured With OEM Specifications And Processes</li><li>Copper Case And Wax Compound Assures Rapid Response To Temperature Changes In The Coolant</li><li>Limited 1 Year Warranty</li></ul>

Manufacturer Part Number

Brand

Vehicle Fitment Type

Model

Thermostat, Standard, OE Replacement, Temperature: 203F, With Seal

Assembled Product Dimensions (L x W x H)

Universal Product Code (UPC check)

fulfillment

title_shipToHome_date_free_delivery

[This review was collected as part of a promotion.] Factory Thermostat was the same make and model, with the only difference had the MOPAR engrave on it.

Same as Factory

walmart.com

[This review was collected as part of a promotion.] Same the last item

[This review was collected as part of a promotion.] The most disappointing feature is this thermostat doesn't have the fail-to-open position.  I incorrectly assumed if the brand was Motorad (which holds the exclusive patent) it's a fail-to-open position thermostat.   I didn't realize only the ones with a 4 digit prefix have this feature.    I also later found out you can't buy a Motorad with the fail to open feature for the Chrysler 200 because it has 2 thermostats, so it was a moot point after all”. I still dropped it to a 4 because that fact is not apparent on the box. 

2nd disappointment:this thermostat opens a little slowly. It was supposed to open at 203F ( - 3F).    I tested in a pan of boiling water several times.  At first, the opening point was 100% full boil (212F) but as I repeated the test it dropped to around  208F.  Perhaps my thermometer wasn't laboratory accurate but it is adjustable, so recalibrated it to measure 212F at boiling.  It just seemed rather slow.

Looks like solid construction