Audi A4 B8 Thermostat
Replacement thermostat — fitment, symptoms & live UK prices.
Fits Audi A4 B8 — check your reg/VIN to confirm
From £7.26 · 6 live listings on eBay
View Thermostat on eBay🛡️ eBay Money Back Guarantee🇬🇧 UK sellers↩️ Easy returns
Coolant Thermostat fits AUDI A4 B8 2.0D 07 to 15 NAPA Genuine Quality Guaranteed
£7.26View ›
COOLANT THERMOSTAT with SEAL AUDI A4 B8 A5 A6 C6 C7 Q5 SEAT EXEO 03L121111AD NEW
£20.95View ›
Thermostat for Audi A4 2.0 TDI + quattro 06'-... 316T0125
£24.25View ›
Coolant Thermostat Housing for Audi A4 B8 8K5 8K2 A4 Allroad A5 A6 Q5 Seat Exeo
£24.99View ›
Coolant Thermostat fits AUDI A4 B8 2.0D 07 to 15 NAPA 03L121111AD 03L121111N New
£26.46View ›
Thermostat 059121111N Audi A4, A5, A6, A7, A8, Q5, Q7, Q8, VW Touareg, Phaeton
£27.00View ›
Will it fit my Audi A4 B8?
Increasingly sold as a full housing unit with an integrated sensor on newer engines — check whether yours is thermostat-only or housing-and-all.
Tip: filter by your reg on eBay's compatibility check, or match the part number stamped on your old unit.
Signs your Audi A4 B8 thermostat needs replacing
- Temp gauge slow to rise or overheating
- Poor heater performance (stuck open)
- Overheating in traffic (stuck shut)
- Coolant warning light
Fitting it yourself
Usually a housing with 2–3 bolts and a coolant hose — straightforward, but refill and bleed the cooling system properly after.
See Thermostat prices on eBayMore Audi A4 B8 parts
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Live pricesFrom £7.26
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