The incident happened Monday, July 25, in Farmingville, according to Suffolk County Police.
Investigators said the victim was walking northbound on Hillside Road just before 2 p.m. when he was hit by what appears to be a red Jeep Wrangler Unlimited. The driver then fled the scene.
Police did not report any injuries.
Investigators released a surveillance photo in hopes that someone may recognize the suspect's vehicle.
Suffolk County Crime Stoppers is offering a cash reward for tips leading to an arrest.
Anyone with information can call 1-800-220-TIPS or submit tips on the Crime Stoppers Website.
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