The OEM skid tray is GRP (glass reinforced plastic)...& several layers of it also...made for places like eastern Europe, Norway, Sweden, Russia etc..
the post on the skid tray is here:-
https://www.golfmk7.com/forums/showpost.php?p=103087&postcount=2
& the section for the parts is this & very clear its the skid tray parts...
QUOTE:-
SKID TRAY VW parts list & approx costs in UK £
Item No. 23:- 5Q0 825 902C, Underrun bar with one duct (Skid tray), £195.73***
Item No. 23:- 5Q0 825 902B, Underrun bar with NO ducts (Skid tray), DO NOT GET as NO air ducts
Item No. 24:- 909 747 01, Black wide head T-star screw A04B, £0.16 (x7)
Item No. 25:- 019 530 7, Flange hex head bolt (M8x25mm), £0.93 (x7)
Item No. 26:- 5Q0 825 921, Retaining bracket, £6.98***
Item No. 26:- 5Q0 825 922, Retaining bracket, £6.98***
Item No. 27:- 907 559 02, Spline head bolt with washer, £1.14 (x2)***
***=Only these items required from the dealers in my project!***
For NAR (USA, Canada, Mexico, etc) Forum member "ADVNTURR" has found that the following parts are easier to order in NAR & do fit as he posts in this thread here:-Click here
Item No. 23:- 3Q0 825 902, Underrun bar (Skid tray), $282.48***
Item No. 27:- N 0195 307, Hex head bolt , $ (x2)***(easier to fit this bolt in tight space but the one above is the correct VW one)
I have confirmed with the VW ETKA & these parts are correct for NAR MK7 Golf, & the tray is from a new Passat hence the "3Q0" start to the part number. The Passat is also an MQB platform car so will share many parts & dimensions.
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