The 308B was the updated version of the first Hesketh – the 308 constructed in 1974. Hesketh’s designer Harvey Postlethwaite revised bodywork and repositioned oil radiators. The car was very competitive, and James Hunt took first team’s victory in the 1975 Dutch Grand Prix. Works team entered two cars in the 1975 – for Hunt and Brett Lunger, and also prepared few cars for privateers. One of them was Austrian Harald Ertl, who was sponsored by Warsteiner Brewery. In his debut at the German Grand Prix, Ertl finished 8th. He went on to retire in his home GP, then finished ninth at Monza.
| Season | Series | Event |
| 1975 | F1WC | German GP |
| Driver | No. | Entrant |
| Harald Ertl | 25 | Warsteiner Brewery |
| Scale | Manufacturer | Collection |
| 1:43 | IXO | Formula 1 Auto Collection |
| Cat. No. | Quality | Rarity |
| No. 154 | 
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