PORSCHE RACING HISTORYErwin Kremer (D)
1973 : Monza 1000 km - 1st in class : Le Mans 24 Hours - 1st in class : Monza 6 Hours - 1st overall
4 February 1973 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 54 | Porsche 911 S | GT+2.0 | John Fitzpatrick (GB)/Erwin Kremer (D)/Paul Keller (CH) | Porsche Kremer Racing (D) | 6th | 5th | 23rd | 630 laps |
25 April 1973 - Monza 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 84 | Porsche 911 Carrera RSR | 911 360 0885 | GT3.0 | Clemens Schickentanz (D)/Erwin Kremer (D) | Porsche Kremer Racing (D) | 8th | 1st | 35th | 142 laps |
10 June 1973 - Le Mans 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 45 | Porsche 911 Carrera RSR | 911 360 0610 | GT3.0 | Paul Keller (CH)/Erwin Kremer (D)/Clemens Schickentanz (D) | Porsche Kremer Racing Team (D) | 8th | 1st | 38th | 317 laps |
2 September 1973 - Monza 6 Hours - European Championship for Grand Touring Cars
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 911 Carrera RSR | 911 360 0885 | GT3.0 | Clemens Schickentanz (D)/Erwin Kremer (D)/Paul Keller (CH) | Porsche Kremer Racing (D) | 1st | 1st | 3rd |