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Audi B6 Engine Thermostat Parts

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ES#2777024 - 06B121111KKT3 -  Thermostat Replacement Kit With ECS Billet Aluminum J-Plug - Includes ECS' upgraded J-Plug, a new thermostat, o-ring, and hardware - Assembled By ECS - Audi

Includes ECS' upgraded J-Plug, a new thermostat, o-ring, and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2777024
Mfg#:
06B121111KKT3
In Stock
ON SALE! SAVE 25%
$159.99

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

$120.70 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2574945 - 06B121111KKT - Thermostat Replacement Kit - Includes new thermostat, j-plug, o-ring, and hardware - Assembled By ECS - Audi

Includes new thermostat, j-plug, o-ring, and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2574945
Mfg#:
06B121111KKT
In Stock
ON SALE! SAVE 19%
$116.99

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

$94.55 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4900436 - 946-189 - Integrated Thermostat Housing Assembly - Includes thermostat and housing. - MotoRad - Audi

Includes thermostat and housing. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MotoRad
ES#:
4900436
Mfg#:
946-189
In Stock at Vendor
$504.63

This product was last offered at the strikethrough price on
02-16-2026

$484.02 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
ES#2763232 - 005224ECS01A - Billet Aluminum Coolant J-Plug W/ O-ring (06B103033A) - Engineered to be the last worry in your coolant system - ECS - Audi

Engineered to be the last worry in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2763232
Mfg#:
005224ECS01A
In Stock
ON SALE! SAVE 30%
$64.99

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

$45.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3979322 - 06B121111K - Thermostat Assembly (06B121111K) - Includes housing, gasket & sensor - URO - Audi
ECS Tuning recommends this product.

Includes housing, gasket & sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3979322
Mfg#:
06B121111K
In Stock
$75.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4759912 - 06B121111K - Thermostat Assembly (06B121111K) - Includes housing, gasket & sensor - Bremmen Parts - Audi

Includes housing, gasket & sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4759912
Mfg#:
06B121111K
In Stock
ON SALE! SAVE 21%
$75.99

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

$60.38 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#240391 - 06B121111K - Thermostat Assembly - Includes housing, gasket & sensor - Mahle - Audi

Includes housing, gasket & sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mahle - Corporate Logo
ES#:
240391
Mfg#:
06B121111K
Ships in 1 Business Day
$123.22 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#467456 - N10124306 - Hexagon Socket Head Bolt - Priced Each - M6x20 bolt used in various areas on your European vehicle - Genuine Volkswagen Audi - Audi Volkswagen

M6x20 bolt used in various areas on your European vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467456
Mfg#:
N10124306
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3659357 - 06E121111M - Thermostat - Includes housing and gasket - URO - Audi

Includes housing and gasket affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3659357
Mfg#:
06E121111M
Ships in 1-2 days
$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3435242 - 06E121111G - Thermostat - Includes housing and gasket. - Rein - Audi

Includes housing and gasket. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3435242
Mfg#:
06E121111G
Ships in 2 Business Days
$82.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#468761 - N10668401 - Hex Bolt - Priced Each - Install new hardware with your new parts. M8x16 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M8x16 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures hard coolant return pipe to the thermostat assembly

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
468761
Mfg#:
N10668401
In Stock
3% off MSRP

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

$5.40

This product was last offered at the strikethrough price on
06-04-2026

$5.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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
01-03-2026

$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4858162 - 034-102-7005 - Low Temp Thermostat - 70 Degree C - Get faster coolant circulation through the radiator for cooler running. - 034Motorsport - Audi Volkswagen

Get faster coolant circulation through the radiator for cooler running. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4858162
Mfg#:
034-102-7005
In Stock
$51.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2606894 - WHT006407 - Sealing O-Ring - Priced Each - Install a new o-ring for a proper seal. 20x3 - Genuine Volkswagen Audi - Audi Volkswagen

Install a new o-ring for a proper seal. 20x3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
O-Ring for the faulty coolant "J-Plug" that is located next to the thermostat.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2606894
Mfg#:
WHT006407
In Stock
27% off MSRP

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

$4.10

This product was last offered at the strikethrough price on
06-04-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4500723 - 079121111J2KT - Thermostat Replacement Kit - Maintain optimum operating engine temperature with a new thermostat replacement kit - Assembled By ECS - Audi

Maintain optimum operating engine temperature with a new thermostat replacement kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4500723
Mfg#:
079121111J2KT
In Stock at Vendor
$532.99

This product was last offered at the strikethrough price on
02-16-2026

$512.99 USD
Free Shipping
on orders $49 and up
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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