Direct OE-quality replacement coolant thermostat to cure overheating issues, resolve engine under-temperature conditions, and restore precise thermal regulation to your V6 engine.
We Price Match - Give Us A Call or Chat!
Up to the 1999 model year
Audi D2 A8 Quattro 4.2 Engine Thermostat Parts
Special Order: No Guaranteed ETA
$15.99 USD
Prevent overheating and premature engine wear
10X Entries Into Our F80 M3 Sweepstakes
Up to the 1999 model year
Special Order: No Guaranteed ETA
ON SALE!
SAVE 18%
Lifetime Replacement
$16.99
$13.86 USD
This product was last offered at the strikethrough price on
05-02-2026
Free Shipping
on orders $49 and up
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.