| Monster Energy NASCAR Cup Series | |||||
| Infraction Date | Track | Team | Level | Infraction | Penalty |
| 3/4/2018 (post-race inspection) | Las Vegas | No. 4 | L1 | Sections 20.4.8.1 Rear Window Support and Structure b. & c.; 20.4.18 Rocker Panel Extensions .b Note: Rear Window Support Braces must keep the rear window glass rigid in all directions at all times. The Right Side Rocker Panel Extension did not meet NASCAR rule specifications, extension was not aluminum. |
Crew chief (Rodney Childers) has been fined $50,000. Car chief (Robert Smith) has been suspended from the next two Monster Energy NASCAR Cup Series Championship Points Events. Team has been assessed with the loss of 20 driver points and 20 owner points. |
| 3/4/2018 (post-race inspection) | Las Vegas | No. 55 | Safety | Sections 10.9.10.4: Tires and Wheels Note: Lug nut(s) not properly installed. |
Crew chief (Todd Parrott) has been fined $10,000. |
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