Subaru six-cylinder engines

The Subaru six-cylinder engines are a series of flat-6 engines that Subaru made in three distinct generations. The ER27, derived from the first-generation EA flat-4, was introduced in November 1985 on the ACX-II concept car and was the sole engine of the 1988 to 1991 Alcyone VX, sold in North America as the XT6; when introduced it was the only water-cooled flat-6 car engine on the market. The EG33, derived from the EJ flat-4, was the sole engine of the Alcyone SVX from 1991 to 1996. The EZ30 and EZ36 were designed to be almost as compact as the EJ25 flat-4, using a bore pitch of 98.4 mm against 113 mm for the EJ, and served as the uplevel option in the Legacy and Outback and as the only engine of the Tribeca. The EZ36 was dropped from 2020, replaced by the turbocharged four-cylinder FA24F.