An enraged Staten Island bus rider damaged the windshield of an MTA bus with a piece of steel rebar after getting into an argument with another passenger early Friday, cops said.

The suspect, 25-year-old Emeka Aduba, got into a dispute with the other guy aboard an MTA S40 bus in Mariner’s Harbor around 12:20 a.m., authorities said.

Aduba stepped off the bus near Harbor Road and Richmond Terrace and flung the rebar at the bus, damaging the windshield, cops said.

He then ran off, but cops caught up with him later Friday, police said.

He was arrested at about 5:15 p.m. and hit with criminal mischief, menacing, reckless endangerment, and harassment, cops said.

Lawyer information for him was not immediately available.