The incident happened just after 5pm yesterday on Stafford Street.
It is thought that the victim had an altercation with the driver before he was injured.
A spokeswoman from West Midlands Police, said: “We were called to Stafford Street in Willenhall just after 5pm where a man had been hit by a car after an altercation between him and the driver.
“He has been taken to hospital with a head injury.
“Efforts are on-going to trace the driver of the car.
“Anyone with information who has not yet spoken to police should contact us via Live Chat on our website or call 101 quoting log 3394 of 23/2.”