| Teams 2003 Sylvania 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 00 | Haas CNC Racing | Jason Leffler | Pontiac |
| 1 | Dale Earnhardt Inc. | John Andretti | Chevrolet |
| 1 | MB2 Motorsports | Mike Skinner | Pontiac |
| 2 | Peak Fitness RacIng | Hermie Sadler | Pontiac |
| 2 | Team Penske | Rusty Wallace | Dodge |
| 4 | Morgan McClure Motorsports | Johnny Sauter | Pontiac |
| 5 | Hendrick Motorsports | Terry Labonte | Chevrolet |
| 6 | Roush Racing | Mark Martin | Chevrolet |
| 7 | Ultra Motorsports | Jimmy Spencer | Dodge |
| 8 | Dale Earnhardt Inc. | Dale Earnhardt, Jr. | Chevrolet |
| 9 | Evernham Motorsports | Bill Elliott | Dodge |
| 10 | MBV Motorsports | Johnny Benson, Jr. | Pontiac |
| 12 | Team Penske | Ryan Newman | Dodge |
| 15 | Dale Earnhardt Inc. | Michael Waltrip | Chevrolet |
| 16 | Roush Racing | Greg Biffle | Ford |
| 17 | Roush Racing | Matt Kenseth | Ford |
| 18 | Joe Gibbs Racing | Bobby Labonte | Chevrolet |
| 19 | Evernham Motorsports | Jeremy Mayfield | Dodge |
| 20 | Joe Gibbs Racing | Tony Stewart | Chevrolet |
| 21 | Wood Brothers Racing | Ricky Rudd | Ford |
| 22 | Bill Davis Racing | Ward Burton | Dodge |
| 23 | Bill Davis Racing | Kenny Wallace | Dodge |
| 24 | Hendrick Motorsports | Jeff Gordon | Chevrolet |
| 25 | Hendrick Motorsports | Joe Nemechek | Chevrolet |
| 27 | Bill Davis Racing | Scott Wimmer | Chevrolet |
| 29 | Richard Childress Racing | Kevin Harvick | Chevrolet |
| 30 | Richard Childress Racing | Steve Park | Chevrolet |
| 31 | Richard Childress Racing | Robby Gordon | Chevrolet |
| 32 | PPI Motorsports | Ricky Craven | Pontiac |
| 38 | Yates Racing | Elliott Sadler | Ford |
| 40 | Chip Ganassi Racing | Sterling Marlin | Dodge |
| 41 | Chip Ganassi Racing | Casey Mears | Dodge |
| 42 | Chip Ganassi Racing | Jamie McMurray | Dodge |
| 43 | Petty Enterprises | Christian Fittipaldi | Dodge |
| 45 | Petty Enterprises | Kyle Petty | Dodge |
| 48 | Hendrick Motorsports | Jimmie Johnson | Chevrolet |
| 49 | BAM Racing | Ken Schrader | Dodge |
| 54 | Travis Carter Enterprises | Todd Bodine | Ford |
| 74 | BACE Motorsports | Tony Raines | Chevrolet |
| 77 | Jasper Motorsports | Dave Blaney | Ford |
| 88 | Yates Racing | Dale Jarrett | Ford |
| 97 | Roush Racing | Kurt Busch | Ford |
| 99 | Roush Racing | Jeff Burton | Ford |