Ecs sells those clips/screws for like $.95 if I remeber correctly, I bought a few awhile back

Edit: they sell them for $1.94 (worth it in my opinion)
http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Search/SiteSearch/Engine_Cover/ES2628493/

 

I wanted to order them for myself but holy crap at the ECS shipping charges!!

$12.18 for parts
$44.84 for shipping to Australia

 

2001 Audi A4 Quattro Parts - genuinevwaudiparts.com

Not much of a difference at GAP

 

Ya ecs shipping is always way expensive. You can buy a tiny bolt and it will still cost $7 from rcs

 

I'll get the screws and clips from the dealership. First time in history something is cheaper from the dealership than somewhere else!!!

 

I got them from the dealership. For the record

N90642001 Locking Pin $2.97 AUD each
N90847501 Clamp $2.00 AUD each

suitable for my '98 1.8T engine cover.