The 1998 Pepsi 400 presented by DeVilbiss was the 21st stock car race of the 1998 NASCAR Winston Cup Series season and the 29th iteration of the event.

Ernie Irvan, driving for MB2 Motorsports, would set the fastest time in the session, with a lap of 39.132 and an average speed of 183.993 mph (296.108 km/h).

Mark Martin, driving for Roush Racing, would set the fastest time in the session, with a lap of 40.159 and an average speed of 179.287 mph (288.534 km/h).

[7] Ernie Irvan, driving for MB2 Motorsports, would win the pole, setting a time of 39.255 and an average speed of 183.416 miles per hour (295.179 km/h).

[8] Four drivers would fail to qualify: Dave Marcis, Kenny Wallace, Gary Bradberry, and Hut Stricklin.