Hi Guys,Does anyone know if the highlighted valve / filter can be purchased seperately?Mine has rusted through and broken off.I've followed the pipe back and it disappears into the rear bumper, is it just a vent for the compressor?Thanks in advance.

 

I am not 100% sure, but that is an air filter on the intake side of the air pump. If I am correct, it is available separately, part # 48925-50030, list price $53.18

See part # 8 in this parts drawing -
https://www.mylparts.com/auto-parts/...ber=8940748030

Available for $36.56 here -
http://www.discountpartsmonster.com/...SABEgKFL_D_BwE

You could also visit a junkyard and get one there for a lot less.