CHARLOTTE, N.C. — Kevin Harvick has been stripped of the playoff points he earned for winning at Las Vegas because of violations discovered on his Ford.

NASCAR ruled Wednesday that Harvick’s No. 4 Stewart-Haas Racing team violated the rule requiring rear window support braces holding the rear window glass rigid, as well as a rule requiring the right side rocker panel extension to be aluminum.

The penalty is the loss of the seven playoff points Harvick earned for winning Sunday’s race and both stages. It was Harvick’s second consecutive win of the season.

Harvick also was docked 20 points. Harvick now has six playoff points instead of the 13 he had earned through three races.