Utilize the input text as a context reference, choose the right relationship between Ilmor and engine from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

MasterCraft also enlisted Ilmor Marine, MasterCraft's exclusive marine engine supplier, as an official event sponsor given their proven record both on the track and on the water.

Answer: industry