Harry P

Registered User
Hi everyone I have a 5 door s line facelift Sportback and I am looking for a s3 rear diffuser to fit. I'm assuming ill be needing a 2016 and onwards diffuser so if anyone has one for sale or knows any one could you let me know! preferably Cheshire or Shropshire area.
thank you.


2019 A3 35TFSI S line
Do you need an oem one or a replica? I bought a replica off x-uk and the quality is very good. Their price was the best on the market at the time. Here is the link: https://www.xenonz.co.uk/store/p1110/Rear-diffuser-for-Audi-A3-2016-S-line-fits-Hatchback.html The "skin only" option is only £106. I didn't fit it yet because I had a black optics package and I needed to paint the diffuser in black which I had not manage yet. I bought a honeycomb grille for my old 8P from them before, so I trust their quality.

If you want the oem part only, you need this part number: 8V3807521T Here's the best price I found so far: https://www.oemvwshop.com/search/?q=8V3807521T But the trouble with the oem one is that you need three trim pieces and each on them is approximately the same price or even more expensive as the diffuser itself. The trim parts are (add 2ZZ to the end of the part number for the alu look or RN4 for the gloss black) :
Trim left: 8V3853505
Trim right: 8V3853506
Trim center: 8V3853079

Hope it helps.

Harry P

Registered User
Thankyou for the reply that helps massively as I was unsure to buy a second hand one as was worried about the quality and fit of a replica however it looks like that’s the route I’ll take now