My car's fuel pump recently malfunctioned left me stranded on the road for a while. I headed to the nearest auto electrician who after checking all fuses and then the fuel line determined the root cause. He then recommended to get either the kabuli or the HKT fuel pump for the car, since the original one was not available nearby. As written on the packing its made in Japan.
I got the pump for Rs. 3300. 
Its working fine. But I want to know:
How reliable this brand of pump is?
How many kilometers can i expect it to last?
Anyone having experience of using this?
Should i be keeping a spare one if its not reliable?