MK4 / MK5 Coolant Inline Filler Neck

An aluminum coolant inline filler neck specific to the MK4 platform as well as the MK5 R32. Attaches to the stock coolant hoses without modification.  This filler, as with any inline filler, MUST paired with an overflow tank. It will not function correctly otherwise. We offer a coolant overflow tank that can be found here: https://swoopsbuilt.com/products/overflow-reservoir

On 24v applications the port to the throttle body has been removed

- Options for MK4 1.8T, 2.8 24v VR6,  R32, and MK5 R32

*1.8T filler includes port for factory oil cooler (Pictured)

*MK4 R32 filler has port for secondary radiator

*Connections can be made to AN upon request*

-Includes radiator cap