Toyota UR engine

The Toyota UR engine family is a series of 32-valve, dual overhead camshaft V8 piston engines that Toyota introduced in 2006 as the UZ series it replaced began to phase out. Production started with the 1UR-FSE and its D-4S direct injection in the 2007 Lexus LS. The family launched with a die-cast aluminium block, aluminium cylinder heads and magnesium head covers, and every UR engine has variable valve timing on both the intake and exhaust camshafts, with timing chains driving the camshafts. It has been built in 4.6, 5.0 and 5.7 litre sizes. Applications include the Lexus LS 460, the Toyota Land Cruiser and the Toyota Tundra, and the Yamaha-developed 2UR-GSE powers Lexus F performance models.