What part is this

Hello,

This part fell off my vw polo and was wondering what it is called and will it cost much to replace.

http://postimg.org/image/lryckut0x/

This car part is known as car engine air hose filter pipe, and its price is $8.00 or 29-30 AED.

That looks more like the heat riser pipe from the exhaust manifold to the thermostatically controlled choke on older, non-computerized cars. The cost shouldn't be too bad, the more difficult thing might be finding a store that still carries a roll of the material.

-Rod