Compatible with 1987-1993 Ford® Mustang®. This product is not created or sold by Ford® Mustang®.; This .100 in. fabricated aluminum coolant expansion / fill tank features an external sight gauge, an extra top vent port, and a billet aluminum top to accept stock cap with sensor. Much more durable than a stock plastic tank and made in the USA. This tank requires the stock cap part number E6ZZ-8K103A.;.