Twin Turbocharger Gasket Set BMW 335 435 535 640 740 X3 X5 X6 8508091 8508092 October 13, 2023twingasket, turbocharger, twinadmin Twin Turbocharger Gasket Set BMW 335 435 535 640 740 X3 X5 X6 8508091 8508092. Please make sure part numbers from your old turbo does match our advert. All car models listed can have 2 turbo options.