Ford Focus ST Mk3 RS Mk2 Custom Airbox Caja de filtro de aire Ventana Zetec Line Mountune

Hi, for sale is a custom made and unique air box window ready to be installed into your existing airbox lid.

Window is made from clear acrylic and has an ABS plastic surround (same material/colour as the airbox lid) and has a lip around the edge to overlap the cut. In the centre is an engraved style ST, RS or Mountune logo sticker.

This is a great way of getting a similar look of the focus RS airbox lid but without allowing the heat soak from the engine entering inside the air intake.

I’m sure you will agree it really finishes off the plain old airbox lid nicely and very much keeps the original factory look finish. Surely a must if you have the Mountune induction kit fitted.

Please let me know in the ‘note to seller’ section during checkout if you require the RS, ST, or Mountune logo. Alternatively plain so you can add a sticker of your choice.

Fitting instructions:

Fitting is very easy as you can see from the photos. I masking taped off the lid to start to protect the lid from any scratches during cutting and also makes it much easier to see the line to cut.

Place the window on top of the airbox and draw around the base of the window. This will give you a hole diameter of around 104mm.

Using a jigsaw or a dremel cutter cut out the circle and tidy up the edges with a half round file.

Then finally insert the window into the hole and secure using a hot glue gun or sealant adhesive on the inside of the air box as shown.

This can be installed in any airbox surface providing it is at least 125mm in length and flat.

To be clear you are receiving the air box window only to fit into your existing air box lid (as shown in photo 12) and not the lid pictured.

Any questions please ask.

Thanks for looking