Toyota World Endurance Championship driver Kamui Kobayashi will make his Spa 24 Hours debut in a Mercedes-AMG GT3 this year.
The Japanese Ex-F1 driver, who is testing with Toyota at Monza in the WEC prologue event this weekend, will drive for Goodsmile Racing & Team Ukyo in July's race.
He will race alongside regular Super GT drivers Nobuteru Taniguchi and Tatsuya Kataoka for fellow former grand prix driver Ukyo Katayama's squad.
Kobayashi has previously announced he would drive a Lexus GT500 in the final Suzuka 1000km event with Team Wedssport Bandoh.
"It's a good challenge for me," Kobayashi told Autosport.
"The Spa 24 Hours has a long history. I want to try and see what happens.
"The GT3 car is a bit different from GT500 [Super GT car], but it will be nice to do GT3 in Europe as well.
"It's a really high [level of] competition, so it's nice to have that opportunity.
"In a 24-hour race we could have everything but I think there's enough of an opportunity before the race to get experience and get a feeling with the car."
The Spa 24 Hours will mark Kobayashi's first appearance in a GT car since his 2013 WEC campaign with Ferrari team AF Corse.
He finished fifth at the Le Mans 24 Hours with the Italian squad, driving a Ferrari 458 Italia GT2.
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