IndyCar and former Formula 1 driver Justin Wilson, who died Sunday at age 37 after suffering a head injury, helped save six lives by donating his organs, his brother said Tuesday.

Stefan Wilson, also a race car driver, announced the news on Twitter. Justin Wilson was struck by debris from another vehicle before crashing into the racetrack wall at the Pocono Raceway in Long Pond, Pa., NPR reports. He had two daughters, ages 5 and 7, with his wife, Julia.

Wilson was born in Sheffield, England, and raced in Formula 1 before winning several races in the Champ Car World Series and IndyCar Series. Wilson’s death was the second loss in the racing community this summer. Jules Bianchi died in July after suffering brain injuries during the Japanese Grand Prix last October.

[NPR]

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Write to Nolan Feeney at nolan.feeney@time.com.