The 2021 NAPA Auto Care 150 was a ARCA Menards Series West race held on October 9, 2021. It was contested over 158 laps—extended from 150 laps due to an overtime finish—on the 0.33-mile (0.53 km) short track oval. It was the eighth race of the 2021 ARCA Menards Series West season. driver P. J. Pedroncelli, collected his first win of the season, and of his career.