Kim, who was off-duty at the time, was driving friends home from a party when he smashed into a guardrail and light pole. Fellow officer, 25-year-old Edwin Paulino, also died.
Paulino was in the passenger seat. Four women in the back seat are recovering.
Sisters Jasmin Ramirez and Iris Gomez-Ramirez were listed in critical condition with broken bones and severe head injuries. The two other women, identified as Melina Ramirez (not related) and Shirley Torres, were in serious condition.
The officers, who worked together at the 32nd Precinct in Harlem, were killed instantly.