We're Open & Here For You.
Shipping 6 Days a Week.
Read our COVID-19 Update
Now Offering CURB-SIDE Pickup / FREE SHIPPING on Orders $49+ *exclusions apply
Sales & Specials

Thermostat Assembly

Housing included
Mfg Part #
06C121111C
ECS Part #
ES#3961
Brand
Wahler
43.32
Free Shipping Free Shipping
on orders $49 and up
Availability: In Stock
Qty
Does this fit my vehicle?

Product Details

The thermostat on your vehicle controls the flow of coolant based on temperature. When you just start your engine, the thermostat remains closed to accelerate the warm up process. After the engine warms up, it opens to allow the warm fluid to flow. If your vehicle is overheating but not blowing warm air from the heater, the problem is more than likely your thermostat.

If the thermostat gets stuck closed, it allows no fluid to flow and ends up overheating the coolant already in the engine. If your vehicle is not getting up to temperature when driving, the thermostat is more than likely stuck open. Your engine does not get up to the proper operating temperature where it runs the most efficiently. To fix this problem and get your vehicle's heat restored, replace your thermostat.

This piece from Wahler will restore the proper coolant flow to your vehicle. Designed to fit like a stock unit, your engine will reach operating temperature properly and cool efficiently.

During your thermostat change, fluid loss is inevitable. Be sure to browse the website to get the proper replacement for your vehicle sent directly to your door.

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi B6 A4 FWD V6 30v
Audi B6 A4 Quattro V6 30v
Audi C5 A6 FWD V6 3.0L
Audi C5 A6 Quattro V6 3.0L
Audi C5 A6 All V6 30v
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings