A prime mover has been partly destroyed by fire on the Eyre Highway causing more than $400,000 damage.
SA Country Fire Service crews were called to the emergency around 105km west of Ceduna shortly before 2.30pm on Sunday.
Upon arrival, firefighters found the truck engulfed in flames.
Eight firefighters in four trucks managed to save the second trailer, however, the prime mover and the first trailer were not salvageable.
SAAS and farm fire units in the area assisted the CFS and put out a nearby grass fire that started adjacent to the truck.