Allmendinger moved into the lead for the first time in the race when he passed Kyle Busch on the start of the final stage, but had to navigate five restarts over the final 31 laps.
With less than 10 laps to go, William Byron moved past Busch into the second and closed to Allmendinger’s rear bumper several times, but the 41-year-old veteran deftly held him at bay and won by 0.666 seconds.
