Page 1 of 1
Headlight washer pump and Viscous fan coupling
Posted: Mon Sep 01, 2025 10:49 am
by The_Laird
Can anyone find these part numbers for me please? My S8 is booked in for a timing belt etc and I thought I’d get these done while the front of the car is off. Thanks.
Re: Headlight washer pump and Viscous fan coupling
Posted: Tue Sep 02, 2025 8:34 am
by Ronin
Top pump seal - 443955465
Bottom pump seal - 431955465A
fan coupling - 077121350D
Re: Headlight washer pump and Viscous fan coupling
Posted: Tue Sep 02, 2025 9:00 am
by MikkiJayne
The headlight washer pump is 3B7955681. Febi do one. You also need a new connector which is 1J0 973 722, which Febi also make, and its prudent to fit a new seal at the same time which is 431955465A.
Re: Headlight washer pump and Viscous fan coupling
Posted: Tue Sep 02, 2025 10:45 am
by The_Laird
Thanks very much indeed both!

Re: Headlight washer pump and Viscous fan coupling
Posted: Thu Sep 11, 2025 6:29 pm
by The_Laird
I’m wondering if, as I’m replacing the headlight washer pump (plus seals and connector) and the viscous fan coupling/clutch, should I also replace the screen washer pump (and seals and connector) as a precaution? If so, can you gurus let me have part numbers again?
Re: Headlight washer pump and Viscous fan coupling
Posted: Sun Sep 14, 2025 1:28 am
by Strummagnet
Washer Pump fits AUDI A8 D2 94 to 02 4A0955651A / 4A0955651B
I bought one as mine had failed.
Re: Headlight washer pump and Viscous fan coupling
Posted: Sun Sep 14, 2025 7:48 am
by The_Laird
Thanks Paul. Did that part include seals?
Re: Headlight washer pump and Viscous fan coupling
Posted: Wed Sep 17, 2025 4:30 pm
by Ronin
They will be separate just like the other ones. I think prestige sells them as a set
Re: Headlight washer pump and Viscous fan coupling
Posted: Thu Sep 18, 2025 2:16 am
by Strummagnet
The_Laird wrote: Sun Sep 14, 2025 7:48 am
Thanks Paul. Did that part include seals?
I bought this.....
https://ebay.us/m/1iELEj
Works fine and came with seals.
Re: Headlight washer pump and Viscous fan coupling
Posted: Sat Sep 20, 2025 11:20 am
by Ronin
Great find! I'm well suprsed they bothered to make the pump and seal as a set
