MK4 / MK5 Coolant Inline Filler Neck swoopsbuilt Catch cans are constructed of

Catch cans are constructed of 3" OD aluminum

-MK4 R32 ( 3

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MK4 / MK5 Coolant Inline Filler Neck swoopsbuilt Catch cans are constructed ofAn 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