PORSCHE RACING HISTORYErnst Kraus (D)
1973 : Interserie Misano - 2nd
1 April 1973 - Interserie Nürburgring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 917/10 | 917/10-016 | INT | Ernst Kraus (D) | Boeri-Helmets-Racing-Team (D) | 5th | 5th | 3rd | 14 laps |
24 June 1973 - Interserie Norisring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 917/10 | 917/10-016 | Gr. 7 | Ernst Kraus (D) | Boeri-Helmets-Racing-Team (D) | 6th | 5th | 11th | 131 laps |
19 August 1973 - Interserie Misano - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 917/10 | 917/10-016 | Ernst Kraus (D) | Boeri-Helmets-Racing-Team (D) | 2nd | 6th | 79 laps |