British engine builder Neil Brown Engineering will return to the top level of Formula 3 racing this season.
T-Sport will run NBE's bespoke racing powerplants in its brace of Dallaras in the F3 European Championship for Spike Goddard and Alexander Toril.
NBE - which also prepares engines for the DTM and the British Touring Car Championship - was previously famed in F3 circles for tuning Mugen Honda powerplants.
Its most recent success in top-flight F3 competition came with T-Sport-run Sergio Perez, who won races in the British series in 2008 (pictured).
NBE's product was the first new-rules engine to hit the track, at Spa in November.
The company's Gavin Harrison said: "We did 3000 kilometres [with Goddard, Toril and Alexander Sims driving] at Barcelona and Valencia before Christmas, so we're well on top of the game.
"You never know where you are until the fat lady sings, but we're happy that we're where performance should be.
"We're very pleased to be working with T-Sport and hopefully it will be fruitful for both of us."
T-Sport technical director Alan Woodhead added: "If there's any bloke I want to have standing alongside me in the pitlane with a computer, with all these new electronics and everything, then it would be Gavin. And it's nice to do something with a British engine builder."
Harrison added that NBE has the capacity to add customers for European F3, while its older-spec Mugen Honda engines are still available for British and German F3.