The fuel cap is an integral part of the built-in diagnostic and emission control system. It prevents fuel from leaking from the filler neck, a significant source of hydrocarbon emissions, and plays an important role in preventing fuel flow.

Studies have shown that a defective or missing fuel cap can allow up to 114 liters of fuel to evaporate into the atmosphere each year.

Farma fuel caps are designed and manufactured to prevent fuel loss mainly through evaporation. The caps are designed to lock in order to prevent fuel theft and vandalism.

Opening and closing is easy.