[2] Driving a family-owned dirt Late Model, Kosiski won 29 of the 55 NASCAR-sanctioned races that he entered in Nebraska, Kansas, Missouri, and elsewhere in the Midwestern United States.

He competed in seven events in the ARCA Permatex Supercar Series in 1989 and 1990, posting a best finish of ninth at Atlanta Motor Speedway.

[3] Owner of Kosiski Auto Parts in Omaha, Nebraska,[1] he was the track operator at I-80 Speedway, which closed after the 2022 season.

He won twenty-one track championships during his career,[4] nine of them coming at Sunset Speedway;[3] in addition to his 1986 national Winston Racing Series title, Kosiski won four NASCAR regional championships during his career.

[4] Joe and Steve Kosiski were the first brothers to win NASCAR touring series championships.