PORSCHE RACING HISTORYChassis No. 917-021
Was built from 917-012 which was scrapped after tests in 1969
25 April 1970 - Monza 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 917 K | 917-021 | S5.0 | Hans Laine (FIN)/Gijs van Lennep (NL) | Racing Team AAW (FIN) | 11th | 8th | 9th | 162 laps |
17 May 1970 - Spa 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 43 | Porsche 917 K | 917-021 | S5.0 | Hans Laine (FIN)/Gijs van Lennep (NL) | Racing Team AAW (FIN) | 5th | 5th | 6th | 68 laps |
16 June 1970 - Le Mans 24 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 18 | Porsche 917 K | 917-021 | S5.0 | Gijs van Lennep (NL)/David Piper (GB) | Team AAW (D) | DNF | 11th | 112 laps - Accident |
28 June 1970 - Interserie Norisring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 917 K | 917-021 | SRP+3.0 | Gijs van Lennep (NL) | Racing Team AAW (FIN) | 2nd | 2nd | 2nd | 82 laps |
5 July 1970 - Interserie Hockenheim Südwestpokal - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 917 K | 917-021 | Gijs van Lennep (NL) | Racing Team AAW (FIN) | 2nd | 4th | 30 laps |
11 July 1970 - Watkins Glen 6 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 35 | Porsche 917 K | 917-021 | S5.0 | Gijs van Lennep (NL)/Gérard Larrousse (F) | International Martini & Rossi Racing Team (D) | 9th | 8th | 5th | 260 laps |
12 July 1970 - Can-Am Watkins Glen - Can-Am - Canadian-American Challenge Cup
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 35 | Porsche 917 K | 917-021 | Gijs van Lennep (NL) | Martini Racing Team | 6th | 17th | 83 laps |
9 May 1971 - Spa 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 22 | Porsche 917 K | 917-021 | S5.0 | Vic Elford (GB)/Gérard Larrousse (F) | Martini Team (NL) | DNF | 2nd | 31 laps - Handling |
24 September 1972 - Interserie Nürburgring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 917 K | 917-021 | INT | Chris Craft (GB) | David Piper Racing Ltd. (GB) | 6th | 5th | 11th | 13 laps - 2:Accident |