Honda have given the green-light for Fernando Alonso to race their upgraded power unit at the Japanese Grand Prix this weekend, after a successful test in Malaysia during free practice.
With Honda having analysed the data gathered during the session, they believe it offers a step forward without compromising reliability.
Although it doesn't offer an outright power advantage, the lighter engine block and revised exhaust are aimed at improving efficiency, costing Honda two development tokens.
The Japanese manufacturer has confirmed the Spaniard will run the engine for the entirety of this weekend and for the remainder of the season.
He will not incur a penalty, as this was served at the previous race in Malaysia.
Alonso's McLaren team-mate Jenson Button will continue with the current specification for Honda's home event – to avoid any grid penalties – before likely taking the upgrade at the following event in Austin, Texas.
