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SebRogers
21-02-2009, 05:42 PM
Two of the fasteners attaching the engine undertray on my B6 Avant have disappeared. They're the ones holding the small deflector that sits ahead of the offside front wheel, causing it to droop and giving the whole tray a lopsided sag on that side.

Does anyone know the relevant part number, by any chance?

I'm contemplating a temporary ziptie bodge of some kind, but it'd be nice to get it properly sorted. My old Octy developed a saggy undertray which grounded more and more frequently, resulting in its eventual disintegration. I'd like to avoid that, if possible...

spartacus 68
22-02-2009, 11:52 AM
Not unusual for the fastners to vibrate themselves free. I started using nylon zip-ties. They're very strong and if you're servicing the car yourself, you simply cut and replace them.;)

randall977
22-02-2009, 03:32 PM
Yes about 4 of mine have disappeared - I asked the garage to replace them on Friday - must look to see if they have. Tried to find the part number but failed, you may need to phone Audi...can you post the number when you have!

SebRogers
22-02-2009, 07:52 PM
Zipties sound like a great solution... except having had a closer look I can't see how to make them work in this case. For each missing fastener there's essentially a single hole. A ziptie needs an entry and an exit hole to make a loop... unless I'm missing something blindingly obvious :confused:

SebRogers
22-02-2009, 07:54 PM
Yes about 4 of mine have disappeared - I asked the garage to replace them on Friday - must look to see if they have. Tried to find the part number but failed, you may need to phone Audi...can you post the number when you have!

I'll let you know if I find the answer!

Marco34
22-02-2009, 10:51 PM
Snap, I'm missing a few. They don't seem critical but are the ones near the arch. Would like to get some. I've used ties in the past too...

ianlovatt
30-10-2020, 09:29 PM
Seems like this never got solved, can anyone advise on part numbers for fasteners please?

cheers ian

ianlovatt
30-10-2020, 11:09 PM
Seems like the following numbers might be relevant for the various different ones holding the tray on depending whether it’s
-wheel arch
-bumper
-strut shared with gearbox cover or at front near bumper

but I haven’t figured out which is which
8E0805121A

8E0805121/8D0805121

8E0805121B


and some Have a rubber washer which may be



4A0805137 (http://m.autopartmaster.com/en/?action=catalog_part&cat=audi&cod=4A0805137&price_type=retail)




EDIT:
I have figured out that 8E0805121A is the one at the front edge holding the bumper to the belly pan. The corresponding “nut” for these is lower profile
8E0805960 And seems a bit rarer/expensive on eBay but i think I’ll try to fashion something from one of the “normal” Ones that go with 8D0805121

VAG-Abound
31-10-2020, 10:25 AM
See if these seem right as well:

Spreader river (little panel in front of wheel arch): N0385491
Grip pin: 8D0805121 (...B suffix for black)
Washer behind varous connectors: 4A0805137