| Crew Chiefs 2021 Hollywood Casino 400 |
|---|
| No. | Crew Chief | Driver | Mfg |
|---|---|---|---|
| 0 | Quin Houff |  | |
| 1 | Kurt Busch | | |
| 2 | Brad Keselowski |  | |
| 3 | Austin Dillon | | |
| 4 | Kevin Harvick | | |
| 5 | Kyle Larson | | |
| 6 | Ryan Newman | | |
| 7 | Corey LaJoie | | |
| 8 | Tyler Reddick | | |
| 9 | Chase Elliott | | |
| 10 | Aric Almirola | | |
| 11 | Denny Hamlin |  | |
| 12 | Ryan Blaney | | |
| 13 | David Starr | | |
| 14 | Chase Briscoe | | |
| 15 | Ryan Ellis | | |
| 17 | Chris Buescher | | |
| 18 | Kyle Busch | | |
| 19 | Martin Truex, Jr. | | |
| 20 | Christopher Bell | | |
| 21 | Matt DiBenedetto | | |
| 22 | Joey Logano | | |
| 23 | Bubba Wallace | | |
| 24 | William Byron | | |
| 34 | Michael McDowell | | |
| 37 | Ryan Preece | | |
| 38 | Anthony Alfredo | | |
| 41 | Cole Custer | | |
| 42 | Ross Chastain | | |
| 43 | Erik Jones | | |
| 47 | Ricky Stenhouse, Jr. | | |
| 48 | Alex Bowman | | |
| 51 | Cody Ware | | |
| 52 | Josh Bilicki | | |
| 53 | Joey Gase | | |
| 66 | Chad Finchum | | |
| 77 | Justin Haley | | |
| 78 | B.J. McLeod | | |
| 96 | Parker Kligerman | | |
| 99 | Daniel Suarez | |
