The 4.7-liter V8 I-Force engine debuted with the top-spec Toyota Tundra pickups in early 2000s and later made it under the hood of the Sequoia SUV line. Apparently, the company considers it outdated now.
In the second-gen Tundra, the displacement volume grew to 5.7 liters and the nominal power rating to 383 hp (286 kW). This new modification of the engine, currently known as the 3UR-FE, is something you can also find on the more modern Toyota Land Cruiser and Lexus LX570. It is also considered one of the marque’s most reliable mills, with some units remaining operational after a million miles of use.
A couple days ago, Toyota has applied for the registration of what sounds like a new engine model called ‘I-Force Max’. This new mill will likely replace the I-Force 3UR-FE for good.
The new engine will debut simultaneously with the next-gen Tundra pickup that is currently running through its pre-production tests and should debut later in the year. The twin-turbo six-cylinder version of the Tundra and its hybrid counterpart will be the first to hit the market, though, with the V8 version to follow several months later.