The fuel filter (not the assembly) will cost you around 1500, and it's (jaali) will cost you 200,300rs.only.
Toyota changes complete fuel pump assembly at 60,000kms which doesn't need any changing, but they still do it. My 2010 gli is 220,000km driven at this moment on genuine fuel pump assembly. Just change both things at 50,000km and its good to go.
Also, for the spark plugs and to stop the knocking from the engine. Try to get denso IK20 iridium sparplugs from devil_striker here on pakwheels.
I tried them and they worked really good for me.
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