i checked in saddar azhar shaheed market and i was able to find the required size fuel filter (LZNF Company) seperately for 1300 Rs. Shown below
Than i checked and found a very nice built quality Denso fuel pump packed in toyota packing as shown in the picture below
As per the shop keeper its the exact same pump used in corolla 2012. and it costed me 2400 Rs. Its built quality looked very precise and markings seemed much authentic.
than i asked my mechanic to fit the new pump in the new filter.
total cost turned out to be 1300 (filter) + 2400 (pump) + 1500 (Labor) = 5200 Rs.
i now feel that the car is working fine and perfectly and i hope it will last a life time IN SHA ALLAH. hope the information is helpful for others.
m available for any further clarification/information is required.