Approximate installation time: 1.5 hour/s.
Required tools: Drill, 6-8mm drill bit, 10mm wrenches + Allen key.
Installation difficulty: Easy (basic mechanical knowledge)
As you can see, the installation is quite simple, but it requires some patience and checking that everything is in place to ensure that everything is well centered. Don't rush and make sure you follow the steps. A correct installation always guarantees a better finish.
Screws or "hardware" (in parentheses for diffusers that include the differential add-on)
x5 - 18mm Spacers.
x4 - 10mm Spacers.
x37 - Nuts - M6 (x41 with differential cover)
x74 - Washers - M6 (x82 with diff. cover)
x16 - Allen - M6x12mm
x6 - Allen - M6x20mm (x9 with diff. cover)
x6 - Allen - M6x25mm (use with 10mm spacers)
x6 - Hexagonal - M6x35mm (use with 18mm spacers)
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The following image shows different marks to identify the position of the main plate as well as the use of the spacers. It is important to note that each of the screws will have 2 washers, one towards the head of the screw, and another towards the nut, to achieve a greater clamping surface.
For space reasons and to make the job easier, it is recommended to first fix the main plate to the spare wheel and mark the holes that would go to the lip with the M6x35 Hex screws, fix the removed lip and then return the assembly to the car.
Red square: Spacers 18mm + Hex. M6x35mm. (Lip M or Oem diffuser link).
Yellow square: The hole closest to the centre of the main plate is directed towards the exhaust side. Use here x2 M6x25mm allen screws to fix to the spare wheel well right on the body ribs (see next photo):
Squares in green: Spacers 10mm + Allen M6x25mm. Main fixing to the spare wheel well.
Lines in blue: Use M6x12 allen to fix the "fins" to the main plate, as well as to join the pieces together.
Use the remaining M6 Hex to attach the differential add-on to the cradle (bottom red square). To do this, make a hole of at least 6mm and secure with nuts and washers.
For the ends, it is recommended to make 3mm pilot holes and use self-tapping screws to correctly position this part. Once aligned, use the M6x20mm allen screws here. (depending on the version, this part may have 2 or 3 holes per piece).
Adjust everything to the desired position and you're done!:
