Undertray fixings - missing something?

Exe_Chris

Exe_Chris

Member
I'm ready to fit the new undertray I've bought, and have been given fixings with it. However it doesn't look to me like there are enough here. I've posed a picture of them, as well as (some of the) attachment points under the car. Can anyone confirm my suspicions or reassure me that these are what are needed? Thanks.

Ut2.jpgUt3.jpg
 
Sorry can't offer any help but jumping on board as this is the next thing I need to sort as my under tray and fixings are all missing
 
undertray screws 001.JPG
Exe_Chris said:
I'm ready to fit the new undertray I've bought, and have been given fixings with it. However it doesn't look to me like there are enough here. I've posed a picture of them, as well as (some of the) attachment points under the car. Can anyone confirm my suspicions or reassure me that these are what are needed? Thanks.

View attachment 20276View attachment 20277
Click to expand...

There are two small bolts that fit up into the wheel arches - can,t see them in your pictures. They are very cheap from Audi dealers - i bought two some months ago.

Also the screws dont look quite right - i used the ones that fit inside the wheel arches like these.

undertray screws 002.JPG

undertray screws 003.JPG

I do believe there are thirteen screws in all http://www.ebay.co.uk/itm/Panel-Scr...ts=Car+Make:Audi|Model:A2&hash=item4ad79e8b92

Ta
Dave
:)
 
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if they are still intact, which mine aren't:
- long ones at the rear into the subframe x 3
- 3 into the front bumper
- 2 per side for the arch linings
- and the famous awful bolts which have sheared off or rotate for probably half the A2-driving population who do their own oil changes and therefore have taken it off more than twice.

I don't honestly remember too much, because mine's normally held on with wishes, blutack, a couple of non-standard screws, cable ties and hope.

8 screws is a good start; 3 at the front, three at the rear, two per side.

- Bret

EDIT says here a definitive part number list: https://a2-freun.de/forum/showpost.php?p=1147683&postcount=8
Partscat seems to think there are 10 screws involved, that's not unreasonable. But then the silver ones are additional, and 6 of those.
Take a look under the car and see where the tray fits.

Note also that teh tray actually keeps the arch linings where they're supposed to be. If you're running without it, at high speeds the linings can flap.
 
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Exe_Chris said:
I'm ready to fit the new undertray I've bought, and have been given fixings with it. However it doesn't look to me like there are enough here. I've posed a picture of them, as well as (some of the) attachment points under the car. Can anyone confirm my suspicions or reassure me that these are what are needed? Thanks.

View attachment 20276View attachment 20277
Click to expand...

I do believe that the the fixings in your photo,s are the door panel pins.

Ta
Dave
:)
 
it does look remarkably like that. What are the part numbers? I've never seen the rubber stoppers before...

- Bret
 
The screws came loose in the envelope, but the washers are part number 4A0-805-137. The rubber plugs are N-020-024-1.
Thanks for the answers. Sorting this undertray has been a right pain. I'll get in contact and tell them they've sent me the wrong things!
 
Exe_Chris said:
The screws came loose in the envelope, but the washers are part number 4A0-805-137. The rubber plugs are N-020-024-1.
Thanks for the answers. Sorting this undertray has been a right pain. I'll get in contact and tell them they've sent me the wrong things!
Click to expand...

According to this diagram the rubber washers (3) are part of that which secures the tray to the bumper with pins (2). The bungs are also involved (4) so you do have some of the right parts but there are lots of other bits involved such as screws and bolts.

http://www.partsbase.org/audi/audi-...sulation-linings-for-floor-and-wheel-housing/

regards

Andrew
 
I don't know about the rubber washers, I haven't seen them on any of my cars. I have only the black hex screws holding my undertray, not the chrome ones. And I replaced the plastic screws with the stainless steel screws, those that connect the flaps on the sides with the wheel covers (bungs?)
I have posted my fixed undertray before, can't find the thread, here, maybe it will help locate the screw holes. Click and enlarge, it's big enough to see all holes on the edges...

Engine cover (1).jpg

Engine cover (3).jpg

Here, yellow - black hex screws, red - 2 nuts under wheel arches, 8mm, if I remember correct

Engine cover (5).jpg
 
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I was looking for a new one before I fixed mine, found out the petrol engine covers are not the same

1.6 FSI shape

Engine cover (3).jpg

1.4 shape

engine cover 1.4 2.jpg
 
Just arm yourself with a selection of flange self tappers, spire nuts and ss washers. Sizes 6 and 8.

I go to a local fasteners (engineers) shop and get a bag full for a few quid.

Spires: http://www.ebay.co.uk/itm/Speed-Fas...w-Size-6-8-10-12-14-Various-Qty-/321215661006

Tappers: http://www.ebay.co.uk/itm/No-6-8-10...appers-/281123599389?var=&hash=item417445b41d

Washers: http://www.ebay.co.uk/itm/M4-5-6-8m...71712910?var=480191259110&hash=item2a22c1318e

With luck you won't need many spires, but good to have a decent assortment.

The worst thing about fitting the tray is the front with the fiddly interlocking over and under sections.
 
I need to find an undertray to sort mine out, I guess I will pick up a little less road noise once fitted?
 
A fair bit less road noise and some protection to the lower engine components. It also joins with the wheel arch liners so stops them flapping about as well.
 
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