Billet Thermostathus Audi 5 Cyl

Upgrade your Audi 5-cylinder engine with our high-quality Billet thermostat housing. This thermostat housing is designed to provide the best possible flow and usability, while being incredibly light in weight.

The thermostat housing is designed with the same attachment to the block as the original part, making installation easy and ensuring a proper fit. You can rest assured that the thermostat housing will stay firmly in place and offer optimal performance.

The thread to the adapter is M40x1.5 and is sealed with an O-ring to ensure a leak-proof connection. You can choose between two different finishes for the thermostat housing - either anodised (natural), anodized black or pure aluminium - to match your personal taste and engine appearance.

Select the coupling type that suits your preferences from the drop-down list. You can choose between AN 20 coupling, 38mm hose adapter, AN 16, or 40mm hydraflow quick connector ( Motorsport )

Please note that this thermostat housing does not fit with original hoses, but has the same 38mm hose connection. It is perfect for those who want to replace original hoses with silicone hoses or AN hoses to create a neater and more stylish engine bay.