Proflow Coolant Overflow Expansion Tank, For Ford Mustang 2015-2018, Recirculating, Fabricated Aluminium, Polished - PFERO08PPart Number: PFERO08P This Ford Mustang fabricated overflow tank suits late model Mustangs from 2015 onwards. These are a direct replacement for the stock plastic tank design which can fail over time after repeated exposure to high temperatures. Fabricated from 6061 T6 sheet metal aluminium, they are also great for anyone looking to dress up their engine compartment while also utilising the stock vented radiator pressure bleed system, making