PORSCHE RACING HISTORYKlaus Fritzinger (D)
1973
27 May 1973 - Nürburgring 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 48 | Porsche 911 Carrera RSR | 911 360 0960 | GT+1.6 | Peter Zbinden (CH)/Serge Bolomey (CH)/Klaus Fritzinger (D) | Porsche Club Romand (CH) | DNF | 34th | Engine |
27 May 1973 - Nürburgring 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 58 | Porsche 911 Carrera RSR | 911 360 0921 | GT+1.6 | Günther Steckkönig (D)/Klaus Fritzinger (D) | M. Weissmann, Vorhangschienen-Fabrik (D) | DNS |