The Mazda FE-DOHC was the DOHC variant of the FE. The official Mazda engine codes are FE-DE and FE-ZE, depending on output level. It is still commonly called the FE3 because of its head castings. The FE-DOHC shares the same dimensions as the original FE-SOHC, including the square 86 mm bore × stroke and it has an ideal 1.74 rod/stroke ratio. The FE-DOHC is usually identified by a gold-coloured cam cover, however not always.