Thermostat Housing Kit in Cast Aluminum Metal | Mk4 12v VR6This is the most bullet proof thermostat housing kit you will find for the Mk4 12v VR6 AFP engine! The kit is built around the upgraded all aluminum thermostat housing matched up with an aluminum cover. These parts will eliminate all the plastic components from the thermostat housing group of parts! Kit includes all the gaskets needed when replacing your housing. Also includes new hardware to replace your old rusty stripped out hardware. KIT Includes:

then you have PSE

For most running pump fuels

the factory engine cover must be slightly modified to clear the PCV hoses

Be sure to select your engine code from the dropdown above

Fully Machined and Shot Peened

The JB4 does not require any additional modifications or previous stages

While Not required we HIGHLY recommend them

We tested arms manufactured using 6061 aluminum

Eliminate a major bottleneck in the 2

Fits all 997

split is in model year 2002

and harshness (NVH) inside of the cabin