| Teams 2004 OReilly 200 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 1 | Ultra Motorsports | Ted Musgrave | Dodge |
| 2 | Ultra Motorsports | Andy Houston | Dodge |
| 4 | Bobby Hamilton Racing | Bobby Hamilton | Dodge |
| 6 | MRD Motorsports | Jay Sauter | Chevrolet |
| 6 | Kevin Harvick Incorporated | Matt Crafton | Chevrolet |
| 07 | SS Green Light Racing | Shane Sieg | Chevrolet |
| 08 | SS Green Light Racing | A.J. Fike | Chevrolet |
| 8 | Ray Montgomery | Chase Montgomery | Dodge |
| 10 | ppc Racing | Terry Cook | Ford |
| 12 | Innovative Motorsports | Robert Huffman | Toyota |
| 13 | ThorSport Racing | Paul White | Chevrolet |
| 14 | Circle Bar Racing | Rick Crawford | Ford |
| 15 | Billy Ballew Motorsports | Shane Hmiel | Chevrolet |
| 16 | Xpress Motorsports | Jack Sprague | Chevrolet |
| 17 | Darrell Waltrip Motorsports | David Reutimann | Toyota |
| 18 | Bobby Hamilton Racing | Chad Chaffin | Dodge |
| 21 | Innovative Motorsports | Hank Parker, Jr. | Toyota |
| 22 | Bill Davis Racing | Bill Lester | Toyota |
| 23 | Bill Davis Racing | Johnny Benson, Jr. | Toyota |
| 24 | Bang! Racing | Travis Kvapil | Toyota |
| 29 | K-Automotive Performance | Deborah Renshaw | Ford |
| 38 | Clean Line Motorsports | Brandon Whitt | Ford |
| 42 | Bang! Racing | Mike Skinner | Toyota |
| 46 | Dollar Racing | Dennis Setzer | Chevrolet |
| 47 | Morgan Dollar Motorsports | Robby Gordon | Chevrolet |
| 50 | Roush Racing | Jon Wood | Ford |
| 52 | Ken Schrader Racing | Ken Schrader | Chevrolet |
| 59 | HT Motorsports | Randy LaJoie | Dodge |
| 62 | Orleans Racing | Steve Park | Dodge |
| 63 | MB Motorsports | Chris Wimmer | Ford |
| 67 | Fiddleback Racing | David Ragan | Ford |
| 75 | Spears Motorsports | David Starr | Chevrolet |
| 88 | ThorSport Racing | Tracy Hines | Chevrolet |
| 90 | Paul Brown | Brad Teague | Ford |
| 92 | Kevin Harvick Incorporated | Kevin Harvick | Chevrolet |
| 99 | Roush Racing | Carl Edwards | Ford |