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Audi B8 RS5 4.2L

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Audi B8 RS5 4.2L Engine Thermostat Parts

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Thermostat Replacement Kit

ES#2763809 - 079121115AAKT5 - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housing and hardware - Genuine Volkswagen Audi - Audi

Maintain proper operating temperature with a new thermostat, housing and hardware

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2763809
Mfg#:
079121115AAKT5
In Stock
$347.99

This product was last offered at the strikethrough price on
06-18-2026

$342.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#3678221 - 079121115bgktKT - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housing and hardware - Assembled By ECS - Audi

Maintain proper operating temperature with a new thermostat, housing and hardware 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3678221
Mfg#:
079121115BGKTKT
In Stock
$347.91

This product was last offered at the strikethrough price on
06-18-2026

$340.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Thermostat

ES#3471601 - 079121115BG - Thermostat - Includes housing - Genuine Volkswagen Audi - Audi

Includes housing Up to production date 08/24/2015

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3471601
Mfg#:
079121115BG
In Stock
10% off MSRP

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

$320.00

This product was last offered at the strikethrough price on
08-31-2026

$288.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#4842638 - 079121115BG - Thermostat - Includes housing - URO - Audi

Includes housing 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Up to production date 08/24/2015

Brand:
URO - Corporate Logo
ES#:
4842638
Mfg#:
079121115BG
Ships in 1 Business Day
$171.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#284823 - 079121119C - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Genuine Volkswagen Audi - Audi

Ensure a proper seal when installing your new thermostat

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284823
Mfg#:
079121119C
In Stock
8% off MSRP

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

$25.99

This product was last offered at the strikethrough price on
09-08-2026

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling Hose Retaining Clip - Priced Each

ES#382263 - 4E0121142 - Cooling Hose Retaining Clip - Priced Each - 38mm C-clip located secures various cooling hoses on your European vehicle - Genuine Volkswagen Audi - Audi

38mm C-clip located secures various cooling hoses on your European vehicle

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
382263
Mfg#:
4E0121142
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#5433968 - 079121115BG - Thermostat - Includes housing - Hamburg Tech - Audi

Includes housing Up to production date 08/24/2015

Brand:
Hamburg Tech - Corporate Logo
ES#:
5433968
Mfg#:
079121115BG
Ships in 1 Business Day
ON SALE! SAVE 10%
$103.99

This product was last offered at the strikethrough price on
09-03-2026

$93.59 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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Manufacturer names and/or part numbers are used only for identification purposes.

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