Summary:
- This mod contains a set of high-capacity (840 US gallons/>3000 Litres) fueltanks for the aforementioned SCS Kenworth W900.
- There are 5 variants of the fueltanks - Chrome, Paint/Chrome, Dechromed v1 & v2, and Fully Painted. The differences between the variants are purely cosmetic.
- The tanks come with treadplate walking areas, and round amber marker/positional lights.
- This mod was entirely built from scratch, with the exception of the marker lights which use stock game assets.
- The tanks come with custom locker style boxes (consider for air tanks and battery space).
- The tanks are only available for the 6x4 Long and 6x4 Anniversary chassis options.
- The tanks are not compatible with any of the door/rear step options on the W900 (because they have their own steps). They will automatically disable the stock doorstep options when selected in the shop. 

Credits
jake_azazel83