This product is a set of two variable camshaft timing solenoids that fit Ford F250, Mustang, and Navigator models. The solenoids have OE/OEM part numbers 8L3Z6M280A, 8L3Z6M280B, and 3L3Z6M280EA, and manufacturer part numbers 8L3Z6M280A, 8L3Z6M280B, and 3L3Z6M280EA. They are performance parts and are not universal fitment. The product is made in China and has interchange part numbers 8L3Z6M280B, TS1010, 3L3Z6C535AA, and 3L3Z6C535-AA.