Busch was rolling along in third place with 26 laps to go in the 130-lap race when he was blackflagged by NASCAR for having the driver-side window net unhooked. Seconds before he would have had to pit, a crash brought out the caution flag and allowed the Nextel Cup star to make his stop under yellow and remain in contention.

Busch took full advantage, passing Hornaday on a restart with eight to go and pulling away to his fifth truck victory. Busch is the first Cup regular to win a truck race this season.

Busch, who led a race-high 65 laps, said he was holding the window net up and driving with one hand for about 12 laps before the black flag.

"It was vibrating off every lap and I was putting it back on every straightaway. My arm was killing me and I probably would have had to come in in about two laps anyway," Busch said, grinning. "That was an experience. I've never done that before."

After the race, Busch, who also will race here in Sunday's Cup race, stopped his Chevrolet truck in front of the flagstand. He jumped onto the hood and took a formal bow in front of the cheering fans before collecting the checkered flag for his victory lap.

"Finally," Busch said about the win in his eighth truck start this season. "We've come so close in some other races this year and something always went wrong."

Hornaday, who started from the pole, led 51 laps and finished second, regained the series lead over Mike Skinner by four points. The two-time truck champion said he was amazed watching Busch drive one-handed on the fast 1.5-mile oval.

"Impossible, and he did it," Hornaday said, shaking his head. "I seen it for eight laps. He had that thing sideways with one hand. That was awesome."

Johnny Benson finished third, followed by Mark Martin and Skinner, who worked his way back toward the front after falling as far back as 13th.

Skinner began the race with an 11-point lead over Hornaday, but the two have swapped the lead for five straight races.

Former open-wheel star Jacques Villeneuve finished on the lead lap in 14th, his best finish showing in four truck races.