Scattered around the map you can find wrecks and boxes with parts in them.
Their condition will vary, you can find things in good and bad condition too.
The treasures rotate every 48 min you spend in the game.

The most importat tips for treasure hunting: you need a car with big cargo capacity, preferaply a Jingu or a Narnoo UTE with a flatbed, and a full gastank.

You have to get close to the wreck/box to be able to get the things from it.
If you get close enough you will see something like this:
If you dont have enough cargo space to get everything in one go a message will pop up
In this case you can return for the remaining parts too.

Here are some examples from around the map.

Noordu

Dooga

Yanagin