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2017 Volkswagen Passat Thermostat

21 items

Upgrade your vehicle's thermostat with A-Premium's high-quality options. Choose reliability and durability for a smoother ride.

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Engine Coolant Thermostat Housing Assembly for Volkswagen Golf 2010-2014 PassatEngine Coolant Thermostat Housing Assembly for Volkswagen Golf 2010-2014 Passat
A-Premium®Part # APTHA0111
Engine Coolant Thermostat Housing Assembly for Volkswagen Golf 2010-2014 Passat
4.685 Reviews
$17.99
Low stock: Only 1 left
Edit ZIP code
2-year warranty
90 days free return
Fits 2017 - 2018 Audi A4 allroad, 2017 - 2018 Audi A4 Quattro, 2018 - 2018 Audi A5 Quattro, 2018 - 2018 Audi A5 Sportback, 2009 - 2009 Audi TT, 2009 - 2014 Audi TT Quattro, 2006 - 2010 Volkswagen Beetle, 2012 - 2014 Volkswagen Beetle, 2013 - 2013 Volkswagen CC, 2010 - 2014 Volkswagen Golf, 2005 - 2005 Volkswagen Jetta, 2006 - 2006 Volkswagen Jetta, 2007 - 2007 Volkswagen Jetta, 2008 - 2008 Volkswagen Jetta, 2009 - 2010 Volkswagen Jetta, 2011 - 2011 Volkswagen Jetta, 2012 - 2012 Volkswagen Jetta, 2013 - 2013 Volkswagen Jetta, 2014 - 2014 Volkswagen Jetta, 2011 - 2011 Volkswagen Jetta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
V15992053, 1K0121113A, 4E0121113
item #1005EYA1
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A-Premium APTHE015 Engine Coolant Thermostat
A-Premium®Part # APTHE015
A-Premium APTHE015 Engine Coolant Thermostat
4.685 Reviews
$21.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2009 - 2013 Audi A3, 2009 - 2013 Audi A3 Quattro, 2009 - 2014 Audi A4, 2013 - 2013 Audi A4 allroad, 2009 - 2013 Audi A4 Quattro, 2010 - 2011 Audi A5, 2010 - 2011 Audi A5 Quattro, 2017 - 2017 Audi A5 Quattro, 2015 - 2015 Audi A6, 2013 - 2013 Audi A6 Quattro, 2015 - 2015 Audi A6 Quattro, 2013 - 2016 Audi allroad, 2011 - 2012 Audi Q5, 2011 - 2011 Audi TT Quattro, 2012 - 2014 Audi TT Quattro, 2009 - 2012 Volkswagen CC, 2014 - 2016 Volkswagen Eos, 2013 - 2013 Volkswagen Jetta, 2009 - 2010 Volkswagen Passat, 2009 - 2011 Volkswagen Passat CC
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Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1005V0YZ
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A-Premium APTHE011 Engine Coolant Thermostat
A-Premium®Part # APTHE011
A-Premium APTHE011 Engine Coolant Thermostat
4.685 Reviews
$30.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2010 - 2011 Audi A3, 2008 - 2013 Audi A3, 2008 - 2008 Audi A3, 2009 - 2013 Audi A3, 2009 - 2013 Audi A3 Quattro, 2008 - 2010 Audi A4, 2009 - 2012 Audi A4, 2015 - 2016 Audi A4, 2014 - 2016 Audi A4 allroad, 2009 - 2013 Audi A4 Quattro, 2014 - 2016 Audi A4 Quattro, 2012 - 2014 Audi A5, 2012 - 2016 Audi A5 Quattro, 2017 - 2017 Audi A5 Quattro, 2012 - 2014 Audi A6, 2015 - 2015 Audi A6, 2013 - 2013 Audi A6 Quattro, 2014 - 2015 Audi A6 Quattro, 2013 - 2016 Audi allroad, 2015 - 2018 Audi Q3
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1005V2E3
Show less
Engine Coolant Thermostat for Volkswagen Passat 12-18 Atlas Porsche Cayenne 90℃
A-Premium®Part # APTHE095
Engine Coolant Thermostat for Volkswagen Passat 12-18 Atlas Porsche Cayenne 90℃
4.685 Reviews
$20.99
Low stock: Only 3 left
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2-year warranty
90 days free return
Fits 2011 - 2014 Volkswagen CC, 2011 - 2017 Volkswagen Touareg, 2010 - 2010 Volkswagen Passat CC, 2015 - 2016 Volkswagen CC, 2016 - 2018 Porsche Cayenne, 2012 - 2018 Volkswagen Passat, 2014 - 2014 Porsche Cayenne, 2020 - 2023 Volkswagen Atlas Cross Sport, 2018 - 2023 Volkswagen Atlas, 2011 - 2014 Porsche Cayenne
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
ConditionNew
item #1018839W
Note
Start to Open Temperature: 90℃.
Show less
A-Premium APTHA0263 Engine Coolant Thermostat Housing Assembly
A-Premium®Part # APTHA0263
A-Premium APTHA0263 Engine Coolant Thermostat Housing Assembly
4.685 Reviews
$49.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2006 - 2010 Volkswagen Beetle, 2012 - 2019 Volkswagen Beetle, 2010 - 2014 Volkswagen Golf, 2005 - 2018 Volkswagen Jetta, 2012 - 2018 Volkswagen Passat, 2006 - 2009 Volkswagen Rabbit
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
ColorBlack
ConditionNew
item #10156DQR
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Engine Coolant Thermostat for VW Jetta 05-18 Golf 10-14 Passat Beetle Rabbit 80℃
A-Premium®Part # APTHE066
Engine Coolant Thermostat for VW Jetta 05-18 Golf 10-14 Passat Beetle Rabbit 80℃
4.685 Reviews
$31.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2006 - 2010 Volkswagen Beetle, 2012 - 2019 Volkswagen Beetle, 2010 - 2014 Volkswagen Golf, 2005 - 2018 Volkswagen Jetta, 2012 - 2018 Volkswagen Passat, 2006 - 2009 Volkswagen Rabbit
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
ConditionNew
item #1013DTKL
Note
Start to Open Temperature: 80℃.
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Engine Coolant Thermostat for Volkswagen Jetta 13-18 Passat Beetle 1.8L 2.0L
A-Premium®Part # APTHE042
Engine Coolant Thermostat for Volkswagen Jetta 13-18 Passat Beetle 1.8L 2.0L
4.685 Reviews
$37.99
Low stock: Only 3 left
Edit ZIP code
2-year warranty
90 days free return
Fits 2014 - 2017 Volkswagen Beetle, 2013 - 2017 Volkswagen Beetle, 2014 - 2018 Volkswagen Jetta, 2013 - 2013 Volkswagen Jetta, 2014 - 2015 Volkswagen Jetta, 2016 - 2018 Volkswagen Jetta, 2014 - 2017 Volkswagen Passat
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
ConditionNew
item #1013DXUV
Note
Start to Open Temperature: 85℃.
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Thermostat Housing Assembly for VW Jetta Passat Beetle Golf Tiguan Audi A3 A6 Q7
A-Premium®Part # APTHA0152
Thermostat Housing Assembly for VW Jetta Passat Beetle Golf Tiguan Audi A3 A6 Q7
4.685 Reviews
$35.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2008 - 2008 Audi A3, 2008 - 2013 Audi A3, 2009 - 2013 Audi A3 Quattro, 2009 - 2016 Audi A4, 2013 - 2016 Audi A4 allroad, 2009 - 2016 Audi A4 Quattro, 2010 - 2014 Audi A5, 2010 - 2017 Audi A5 Quattro, 2012 - 2015 Audi A6, 2013 - 2015 Audi A6 Quattro, 2013 - 2016 Audi allroad, 2015 - 2018 Audi Q3, 2015 - 2018 Audi Q3 Quattro, 2011 - 2012 Audi Q5, 2013 - 2017 Audi Q5, 2017 - 2017 Audi Q7, 2009 - 2010 Audi TT Quattro, 2011 - 2013 Audi TT Quattro, 2014 - 2014 Audi TT Quattro, 2015 - 2015 Audi TT Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
ColorBlack
item #10027N7L
Note
This item comes with housing and seal.
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Vemo V15-99-2115 Engine Coolant Thermostat Housing
VemoPart # V15-99-2115
Vemo V15-99-2115 Engine Coolant Thermostat Housing
57 Reviews
$336.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Jetta, 2016-2016 Volkswagen Jetta, 2016-2016 Volkswagen Jetta, 2016-2016 Volkswagen Passat, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Jetta, 2016-2017 Volkswagen Jetta, 2016-2017 Volkswagen Passat, 2016-2017 Volkswagen Passat, 2016-2017 Volkswagen Passat, 2016-2017 Volkswagen Passat
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
V15-99-2115, 06K121011, 06K121111M, 06K121113G, 06K121605C, 06K121011B, 06K121111N, 06K121605, 
...View more
item #1001QR8H
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Vemo V15-99-2108 Engine Coolant Thermostat Housing
VemoPart # V15-99-2108
Vemo V15-99-2108 Engine Coolant Thermostat Housing
57 Reviews
$292.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Jetta, 2016-2016 Volkswagen Jetta, 2016-2016 Volkswagen Jetta, 2016-2016 Volkswagen Passat, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Beetle, 2016-2017 Volkswagen Jetta, 2016-2017 Volkswagen Jetta, 2016-2017 Volkswagen Passat, 2016-2017 Volkswagen Passat, 2016-2017 Volkswagen Passat, 2016-2017 Volkswagen Passat
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
V15-99-2108, 06K121111H, 06K121111N, 6K121111H, 6K121111N, 6K121513B, 06K121111M, 06K121513B, 
...View more
item #1001QQL9
Note
With thermostat, Pre-Assembled
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Vemo V15-99-2069 Engine Coolant Thermostat
VemoPart # V15-99-2069
Vemo V15-99-2069 Engine Coolant Thermostat
57 Reviews
$42.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2009-2009 Audi A3 Quattro, 2009-2012 Audi A4 Quattro, 2009-2013 Audi A3, 2009-2014 Audi A4, 2009-2014 Audi A4 Quattro, 2010-2010 Audi A5, 2010-2010 Audi A5 Quattro, 2010-2011 Audi A3 Quattro, 2011-2012 Audi Q5, 2011-2012 Audi Q5, 2011-2014 Audi A5, 2011-2014 Audi A5 Quattro, 2011-2014 Audi A5 Quattro, 2012-2012 Audi A6, 2012-2013 Audi A3 Quattro, 2013-2014 Audi A6, 2013-2014 Audi A6, 2013-2015 Audi A6 Quattro, 2013-2015 Audi A6 Quattro, 2013-2016 Audi allroad
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
V15-99-2069, 78742, 862031695, TX11795D, TX12395D, 06J121113, 6J121113, 6J121113A, 
...View more
item #1001QQ5S
Note
With seal
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Beck/Arnley 143-0915 Engine Coolant Thermostat Housing Assembly
Beck/ArnleyPart # 143-0915
Beck/Arnley 143-0915 Engine Coolant Thermostat Housing Assembly
51 Reviews
$314.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2013-2013 Volkswagen Beetle, 2013-2013 Volkswagen Jetta, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Jetta, 2013-2015 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2014-2014 Volkswagen Beetle, 2014-2017 Volkswagen Beetle, 2014-2017 Volkswagen Passat, 2014-2018 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2016-2016 Volkswagen Jetta, 2016-2017 Volkswagen Beetle, 2017-2018 Volkswagen Jetta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
143-0915
item #1000XCE0
Show less
ÜRO Parts 06K121111P Engine Coolant Thermostat Housing Assembly
ÜRO PartsPart # 06K121111P
ÜRO Parts 06K121111P Engine Coolant Thermostat Housing Assembly
52 Reviews
$122.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2013-2013 Volkswagen Beetle, 2013-2013 Volkswagen Jetta, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Jetta, 2013-2015 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2014-2014 Volkswagen Beetle, 2014-2015 Volkswagen Beetle, 2014-2016 Volkswagen Jetta, 2014-2017 Volkswagen Passat, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2016-2016 Volkswagen Beetle, 2016-2016 Volkswagen Jetta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
QuantityOne Set
Part interchange
06K121111P, 06K121111P, 06K121111N, 06K121441, 06K121111M, 06K121111H, 06K121513B, V15-99-2108, 
...View more
item #1000ZP9K
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Vemo V15-99-2053 Engine Coolant Thermostat Housing
VemoPart # V15-99-2053
Vemo V15-99-2053 Engine Coolant Thermostat Housing
57 Reviews
$43.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2009-2009 Audi TT, 2009-2009 Audi TT Quattro, 2010-2013 Audi TT Quattro, 2014-2014 Audi TT Quattro, 2017-2018 Audi A4 Quattro, 2017-2018 Audi A4 allroad, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Quattro, 2018-2018 Audi A5 Sportback, 2005-2005 Volkswagen Jetta, 2006-2006 Volkswagen Jetta, 2006-2010 Volkswagen Beetle, 2007-2007 Volkswagen Jetta, 2007-2009 Volkswagen Rabbit
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
V15-99-2053, 1K0121113A
item #1001QQWK
Show less
Beck/Arnley 143-0945 Engine Coolant Thermostat
Beck/ArnleyPart # 143-0945
Beck/Arnley 143-0945 Engine Coolant Thermostat
51 Reviews
$29.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2011-2017 Volkswagen Touareg, 2012-2014 Volkswagen Passat, 2013-2016 Volkswagen CC, 2016-2018 Volkswagen Passat, 2018-2021 Volkswagen Atlas, 2020-2021 Volkswagen Atlas Cross Sport
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
143-0945
item #1000XH43
Show less
Beck/Arnley 143-0979 Engine Coolant Thermostat
Beck/ArnleyPart # 143-0979
Beck/Arnley 143-0979 Engine Coolant Thermostat
51 Reviews
$43.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2013-2013 Volkswagen Beetle, 2013-2013 Volkswagen Jetta, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Jetta, 2013-2015 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2014-2014 Volkswagen Beetle, 2014-2017 Volkswagen Beetle, 2014-2017 Volkswagen Passat, 2014-2018 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2016-2016 Volkswagen Jetta, 2016-2017 Volkswagen Beetle, 2017-2018 Volkswagen Jetta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
QuantityOne Set
Part interchange
143-0979
item #1000XG1E
Show less
Beck/Arnley 143-0867 Engine Coolant Thermostat
Beck/ArnleyPart # 143-0867
Beck/Arnley 143-0867 Engine Coolant Thermostat
51 Reviews
$48.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2008-2008 Audi A3, 2009-2009 Audi A3, 2009-2009 Audi A3 Quattro, 2009-2009 Audi TT, 2009-2009 Audi TT Quattro, 2009-2014 Audi A4 Quattro, 2009-2016 Audi A4, 2010-2010 Audi A3, 2010-2010 Audi A5, 2010-2011 Audi A3, 2010-2011 Audi A3, 2010-2013 Audi A3, 2010-2013 Audi A3, 2010-2013 Audi A3 Quattro, 2010-2013 Audi TT Quattro, 2010-2016 Audi A5 Quattro, 2011-2011 Audi A5, 2011-2012 Audi Q5, 2012-2013 Audi A3, 2012-2013 Audi A6
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
QuantityOne Set
Part interchange
143-0867
item #1000XHVX
Show less
Beck/Arnley 143-0913 Engine Coolant Thermostat Housing Assembly
Beck/ArnleyPart # 143-0913
Beck/Arnley 143-0913 Engine Coolant Thermostat Housing Assembly
51 Reviews
$263.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2015-2016 Audi A3, 2015-2020 Audi A3 Quattro, 2015-2020 Audi S3, 2016-2018 Audi A6, 2016-2023 Audi A6 Quattro, 2016-2023 Audi TT Quattro, 2016-2023 Audi TTS Quattro, 2017-2020 Audi A3, 2017-2020 Audi A4, 2017-2023 Audi A4 Quattro, 2017-2023 Audi A4 allroad, 2017-2023 Audi Q7, 2018-2023 Audi A5 Quattro, 2018-2023 Audi A5 Sportback, 2018-2023 Audi Q5, 2019-2023 Audi Q3, 2020-2023 Audi Q5 PHEV, 2021-2022 Audi A7 Sportback, 2021-2023 Audi Q5 Sportback, 2022-2023 Audi A3
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
143-0913
item #1000X8PQ
Show less
Engine Coolant Thermostat - Mahle TX 200 90D
MahlePart # TX 200 90D
Engine Coolant Thermostat - Mahle TX 200 90D
51 Reviews
$48.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2013-2013 Volkswagen Beetle, 2013-2013 Volkswagen Jetta, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Beetle, 2013-2015 Volkswagen Jetta, 2013-2015 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2013-2016 Volkswagen Jetta, 2014-2014 Volkswagen Beetle, 2014-2017 Volkswagen Beetle, 2014-2017 Volkswagen Jetta, 2014-2017 Volkswagen Passat, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2015-2016 Volkswagen Jetta, 2016-2016 Volkswagen Jetta, 2016-2017 Volkswagen Beetle, 2017-2017 Volkswagen Jetta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
TX 200 90D, 06K 121 113 E, TX20090D
item #1000XR5X
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Engine Coolant Thermostat - Mahle TX 353 95
MahlePart # TX 353 95
Engine Coolant Thermostat - Mahle TX 353 95
51 Reviews
$33.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2008-2009 Audi A3, 2009-2009 Audi A3 Quattro, 2009-2009 Audi TT, 2009-2009 Audi TT Quattro, 2009-2014 Audi A4 Quattro, 2009-2016 Audi A4, 2010-2010 Audi A3, 2010-2011 Audi A3, 2010-2011 Audi A3, 2010-2013 Audi A3, 2010-2013 Audi A3, 2010-2013 Audi A3 Quattro, 2010-2013 Audi TT Quattro, 2011-2012 Audi Q5, 2012-2013 Audi A3, 2012-2013 Audi A6, 2012-2014 Audi A5, 2012-2016 Audi A5 Quattro, 2013-2015 Audi A6 Quattro, 2013-2015 Audi allroad
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2017 Volkswagen Passat
Item LocatedUnited States
Quantity1
Part interchange
TX 353 95, 34804, 707-203, TX35395, 06H 121 113 B
item #1000XSGN
Show less
Page 1 of 2

What is an engine thermostat?

 While all engines can become too hot, if your thermostat isn't working correctly, your engine's well-being is at serious risk. The engine thermostat, often simply referred to as a thermostat, regulates the engine's operating temperature within an optimal range (typically around 195 to 220 degrees Fahrenheit).

How does a car thermostat work?

As a temperature-sensitive valve within the cooling system, a car thermostat responds to changes in coolant temperature. Understanding how it works by the following breakdown steps:

  • Closed position (cold start)

Initially closed to help the engine warm up quickly.

  • Heating up

The engine generates heat during operation.

  • Opening the thermostat

A temperature-sensitive element (usually wax) causes the thermostat to open gradually.

  • Coolant flow

When open, coolant flows from the engine to the radiator.

  • Maintaining optimal temperature

Adjusts coolant flow to maintain the ideal engine temperature.

  • Temperature regulation

Continuously adjusts to prevent overheating and ensure efficient operation.

Signs of a bad thermostat

  1. Overheating: The engine becomes excessively hot due to a stuck-closed thermostat.
  2. Low or fluctuating temperature: A thermostat stuck open results in a cooler engine, affecting fuel efficiency and heating.
  3. Temperature warning light: Illuminates to indicate engine overheating due to a faulty thermostat.
  4. Poor fuel efficiency: Stuck-open thermostat reduces fuel efficiency as the engine operates less efficiently at lower temperatures.
  5. Inadequate cabin heating: Insufficient cabin heating in cold weather with a thermostat that's stuck open.
  6. Coolant leaks: Gasket or sealing issues can lead to coolant leaks.
  7. Rapid temperature fluctuations: The gauge shows rapid swings between hot and cold.
  8. Engine running hot at idle: Higher engine temperature during idle or in traffic due to restricted coolant flow.
  9. Slow or inconsistent warm-up: Longer-than-normal warm-up times, even in moderate weather.
  10. Inconsistent heater operation: This affects the performance of the vehicle's heater, causing inconsistent or inadequate heating in cold weather.

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