The 1992 Champion Spark Plug 400 was the 19th stock car race of the 1992 NASCAR Winston Cup Series season and the 23rd iteration of the event. The race was held on Sunday, August 16, 1992, before an audience of 95,000 in Brooklyn, Michigan, at Michigan International Speedway, a two-mile (3.2 km) moderate-banked D-shaped speedway. The race took the scheduled 200 laps to complete. Depending on fuel mileage, Leo Jackson Motorsports driver Harry Gant would manage to run the final 51 laps on one tank of fuel to take his 18th and final NASCAR Winston Cup Series victory and his second and final victory of the season. To fill out the top three, owner-driver Darrell Waltrip and Junior Johnson & Associates driver Bill Elliott would finish second and third, respectively.