I'm not so sure if the Honda Insight in Malaysia have the ZE1 model, most we encounter in Malaysia market is the 4 cylinder LDA type of engine which is for second generation ZE2 and ZE3 model. But it may not surprise if there are customer looking for this piece of gasket if the vehicle are from our neighbour country like Thailand or Singapore.
Just stock up few pieces of rocker cover gasket at the moment, and may consider of stocking the gasket kit if it is really exist on the road of Malaysia.