Kevin Harvick and the No. 4 Stewart-Haas Racing team will head to Pocono without crew chief Rodney Childers after the team was hit with a P3 penalty following last week's Brickyard 400 at Indianapolis Motor Speedway.

NASCAR announced Wednesday that Harvick's No. 4 Chevrolet was in violation of section 12.1; Section, which specifies all lug nuts be installed in a safe and secure manner.

Childers has been fined $20,000 and placed on NASCAR probation through December 31, 2016. He is the fifth crew chief to be suspended for a lug nut violation, joining Adam Stevens, Chad Johnston, Randall Burnett, and Tony Gibson.

When NASCAR first announced the new rule in April, Childers tweeted that he would likely be suspended at some point, saying it was commonplace for cars to be missing a lug nut in post-race inspection, even when all five lug nuts were required to be installed on pit stops. 

Harvick, the 2014 Sprint Cup champion, leads the standings by 24 points on the strength of a series-high 16 top 10s and a victory at Phoenix earlier this season.

NASCAR issued written warnings to five teams at Indianapolis for various inspection infractions. The teams of Kasey Kahne (1), Paul Menard (3) and Matt DiBenedetto (4) received warnings for failing laser inspection station measurements twice in pre-race inspection. As a result of receiving their fourth written warning, DiBenedetto's No. 83 team will lose their pit stall selection this weekend at Pocono.

The teams of Kurt Busch (2) and Aric Almirola (3) received warnings from NASCAR for failing template inspection twice during pre-qualifying inspection. Should the No. 43 team receive another warning, they'll be in danger of forfeiting pit stall selection at either Pocono or Watkins Glen.