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Volkswagen Passat B5 FWD TDI Engine Thermostat Parts

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Allen/Hex Bolt - Priced Each

ES#4151982 - N90945002 - Allen/Hex Bolt - Priced Each - Install new hardware with your new parts. M7x21.5mm - Rein - Audi Volkswagen

Install new hardware with your new parts. M7x21.5mm 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4151982
Mfg#:
N90945002
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Allen/Hex Bolt - Priced Each

ES#6661 - N90945002 - Allen/Hex Bolt - Priced Each - Install new hardware with your new parts. M7x21.5mm - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M7x21.5mm Secures thermostat housing to the block, 2 required.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
6661
Mfg#:
N90945002
In Stock
Limited Qty Sale
29% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$8.49

This product was last offered at the strikethrough price on
03-18-2026

$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#6391 - 044121113 - Thermostat - 87C - Bring your car to operating temperature. - Vaico - Audi Volkswagen

Bring your car to operating temperature. We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
6391
Mfg#:
044121113
In Stock
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#5335359 - 044121113 - Thermostat - 87C - Bring your car to operating temperature. - Bremmen Parts - Audi Volkswagen

Bring your car to operating temperature. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5335359
Mfg#:
044121113
In Stock
ON SALE! SAVE 24%
$14.99

This product was last offered at the strikethrough price on
05-02-2026

$11.42 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#276208 - 044121113 - Thermostat - 87C - Keep your car running at the proper temperature. Does not include o-ring - Genuine Volkswagen Audi - Audi Volkswagen

Keep your car running at the proper temperature. Does not include o-ring

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
276208
Mfg#:
044121113
In Stock
Limited Qty Sale
$67.99

This product was last offered at the strikethrough price on
08-03-2026

$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87�C

ES#261793 - 044121113 - Thermostat - 87C - Keep your car running at the proper temperature. - Wahler - Volkswagen

Keep your car running at the proper temperature.

Brand:
Wahler - Corporate Logo
ES#:
261793
Mfg#:
044121113
In Stock at Vendor
$18.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2966372 - b5passtditstatKT - Thermostat Replacement Kit - Includes thermostat with housing, o-ring and mounting hardware - Genuine Volkswagen Audi - Volkswagen

Includes thermostat with housing, o-ring and mounting hardware

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2966372
Mfg#:
B5PASSTDITSTATKT
Ships in 7 Business Days
$128.99

This product was last offered at the strikethrough price on
03-18-2026

$127.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2966379 - B5PSSTDITSTATKT1 - Thermostat Replacement Kit - Includes thermostat with housing, o-ring and mounting hardware - Assembled By ECS - Volkswagen

Includes thermostat with housing, o-ring and mounting hardware 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966379
Mfg#:
B5PSSTDITSTATKT1
Ships in 1-2 days
ON SALE! SAVE 25%
$33.99

This product was last offered at the strikethrough price on
05-02-2026

$25.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 71�C

ES#1647 - 056121113E - Thermostat - 71C - With Sealing Ring, Low Temperature - Wahler - Audi Volkswagen

With Sealing Ring, Low Temperature

Brand:
Wahler - Corporate Logo
ES#:
1647
Mfg#:
056121113E
Ships in 1-2 days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#2084648 - 044121113 - Thermostat - 87C - Keep your car running at the proper temperature. - Meyle - Audi Volkswagen

Keep your car running at the proper temperature. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
2084648
Mfg#:
044121113
Ships on Sep 8, 2026
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#3149395 - 044121113 - Thermostat - 87C - Keep your car running at the proper temperature. Includes o-ring - Rein - Audi Volkswagen

Keep your car running at the proper temperature. Includes o-ring 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3149395
Mfg#:
044121113
Back Ordered
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#2800962 - 056121113D - Thermostat - 87C - Keep your car running at the proper temperature. Does not include o-ring - Meistersatz - Audi Volkswagen

Keep your car running at the proper temperature. Does not include o-ring

Brand:
Meistersatz - Corporate Logo
ES#:
2800962
Mfg#:
056121113D
Ships in 4 Business Days
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

Keep your car running at the proper temperature. Does not include o-ring We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2812955
Mfg#:
056121113D
Ships in 2 Business Days
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2966380 - B5PSSTDITSTATKT2 - Thermostat Replacement Kit - Includes thermostat with housing, o-ring and mounting hardware - Assembled By ECS - Volkswagen

Includes thermostat with housing, o-ring and mounting hardware 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966380
Mfg#:
B5PSSTDITSTATKT2
Ships in 1-2 days
ON SALE! SAVE 25%
$28.99

This product was last offered at the strikethrough price on
05-02-2026

$21.82 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#4326781 - 068121113H - Thermostat - 87C - Bring your car to operating temperature. - Meyle - Audi Volkswagen

Bring your car to operating temperature. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4326781
Mfg#:
068121113H
Ships on Sep 8, 2026
$12.99 USD
Free Shipping
on orders $49 and up

Thermostat - 80°C (Low Temp)

Low-temperature 80°C thermostat to prevent heat soak, resolve overheating issues, and cure stubborn check engine lights on your classic or modified VAG vehicle. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2865913
Mfg#:
040121113S
Special Order: No Guaranteed ETA
$12.99 USD
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Thermostat Parts

Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.

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Manufacturer names and/or part numbers are used only for identification purposes.

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