Aluminum Coolant Expansion Tank - MK3 Thru MK6 logo The top half of this

The top half of this coolant ball has been machined from one solid piece of aluminum and was designed to accept the OE radiator cap (cap not included)

Press-in AN adapter that replaces the barbed connection to the coolant port on the back of the MK3/MK4 12V VR6 head

Attaches to the stock coolant hoses without modification

-Includes radiator cap

*Though the brake reservoir fits snuggly into the master we highly recommend using zipties to temporarily secure the reservoir to the master while using a power bleeder

Aluminum Coolant Expansion Tank - MK3 Thru MK6 logo The top half of thisIts finally here! Our Aluminum Coolant Expansion Tank is a direct replacement alternative to the factory plastic coolant ball. The top half of this coolant ball has been machined from one solid piece of aluminum and was designed to accept the OE radiator cap (cap not included). The ports are now both NPT allowing the user to run the OE hoses or convert to AN. A level sensor with pigtail is included to connect to the OE lever sensor harness. The level