This is a pictorial history of the flat-6 engine found in Porsche 911s for the past 50 years, as well as Boxsters and Caymans in recent times.
It covers from the 2.0 air-cooled flat-6 found in 1963's 911 up to the 2.7 litre water-cooled flat-6 found in the current Boxster.
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| 3.0-litre flat-six engine with turbocharger; Porsche 911 Turbo (930); 1975 |
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| 3.6-litre flat-six engine with Varioram system; Porsche 911 Carrera 3.6 (993); 1995 |
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| 3.6-litre flat-six engine with turbocharger; Porsche 911 Turbo (993); 1996 |
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| 3.4-litre flat-six engine; Porsche 911 Carrera 3.4 (996); 1998 |
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| 2.5-litre flat-six engine; Porsche Boxster (986); 1997 |
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| Porsche 911 S 2.0 Coupé; 1968 |
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| Porsche 911 S 2.7 Targa (links) and 911 Turbo 3.0 (G-series); 1976 |
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| 2.0-litre flat-six engine; Porsche 911; 1964 |
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| 3.2-litre flat-six engine; Porsche 911 Carrera 3.2 (G-series); 1984 |
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| 2.0-litre flat-six engine; Porsche 911; 1963 |
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| 3.8-litre flat-six engine; Porsche 911 Carrera S (991); 2011 |
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| 2.7- and 3.4-litre flat-six engine; Porsche Boxster/Cayman (981); 2012/2013 |