NASCAR announced that the JTG Daugherty Racing teams of #37-Ryan Preece and #47-Ricky Stenhouse, Jr. have been penalized prior to the Auto Club 400 for illegal body modifications. Both team were give L1 penalties and have been penalized 10 driver and owner points. Both crew chiefs have also been suspended for today’s race.
The violation was: Section 20.20 Assembled Vehicle Overall Rules; NOTE: Parts, systems, devices, omissions or component failures cannot affect what what should otherwise be the normal airflow over the body of the vehicle.
Except in cases explicitly permitted in the NASCAR Rules, installation of additional components and/or modifications of existing components to affect the aerodynamic properties of the vehicle will not be permitted, including but not limited to, safety systems, chassis and roll cage, suspension, steering systems, brake systems, heat shields, body fillers, body sealers, filler panels, drivetrain components, and exhaust components.