Newman docked 25 points, crew chief put on probation for violation
Also, crew chief Roy McCauley was fined $25,000 and placed on probation until Dec. 31, and team owner Roger Penske was penalized 25 owners' points.
"What happened last week was a mistake and we're moving on from it and looking forward to this week," Newman said. "We hate to lose points, but we have a good team and we will be able to make them up."
Newman finished fourth at TMS while Carl Edwards took the checkered flag for his third win of the season.
There was no immediate word from Penske Racing South about appealing the penalty, but the team indicated it plans to move on.
"It is always our intention to follow NASCAR's rules, and we regret this mistake," said Michael Nelson, vice president of racing operations. "We look forward to getting back to the track this week and are focused on having a strong run at Phoenix."
David Newton covers NASCAR for ESPN.com. Information from The Associated Press contributed to this story.