Seat Leon Cupra 290 (Mk3 2020) - Front Undertray Dilemma

[SamProjectRS3]

Hi All,

First time using this forum for information. Hopefully posting it right.
Recently thought about getting an engine under tray for my Seat Leon Cupra 290 (Year 2020) Mk3, with it coming up to winter conditions again. It didn't have one when I purchased the car last year.

I believe the part number for the Under Tray is SKU reference: 5Q0825236N? Let me know if incorrect.
Are the following codes correct for the fasteners used to fit the under tray?

• WHT000729A - Self locking hex head bolt (not sure how many are used)?
• N90335004 - Starlock washer (again not sure how many are used)?

Or is there any specific code for an assembling kit to go with the tray?

Final question: Is it worth buying the parts and getting a local garage to fit or get SEAT to complete the whole job (get the parts from stock and fit)?

 

[nd-photo.nl]

With thanks to @Craig.

- Undertray: 5Q0 825 236 Q
- Will need 3x WHT 000 729 A (to secure the undertray at the rear just by the sub frame)
- The existing undertray has the other bolts/screws required.

Undertray has 2x torx on each side and 1x screw/bolt at the front in the middle

[edit]
I bought the undertray aftermarket. The 3x bolts I bought from the dealer.