S4 sump plug size

[stevefh]

Hi all, lost my sump hex socket for my S4 , is it metric or imperial and what size? Thanks

[jonwat]

From memory its' 18mm 

[ramjet]

I'll check mine in the morning.

[Escape]

My SE (and others I've had in the Shop) is a 12mm metric. Part nr is the same for the SE and S4.

[ramjet]

On 27/08/2021 at 06:59, stevefh said:

Hi all, lost my sump hex socket for my S4 , is it metric or imperial and what size? Thanks

Interesting. Reading your post and John's reply, It would appear that your sump plug has a head for a hex socket. Mine takes an Allen key. I have a 12 mm one that fits it, but I would suggest that it is 1/2" as the 12mm is a bit sloppy in it.

Not much help to you really, is it?

[Escape]

To clarify, mine also takes an Allen key. Same plug as for the cam carrier bolts.
I think it was the earlier ones that used a hex head, in combination with a smaller sump according to the parts list. I don't know the size socket needed, but can check on the Turbo Esprit tomorrow.

[jonwat]

My '82 & '85 S3s & my '89 Turbo all had hex head drain plugs, part number A036R6014Z, which I'm pretty sure was 18mm because I remember buying an 18mm rachet ring spanner for it. MY '95 S4s had a socket head drain plug, part number A911E6343F 

[stevefh]

Hi all, thanks for the replies.My description “hex socket” was doubtful as I seem to remember an Allen key type end projecting from the socket and half inch seems about right. I will report back when I get a chance to have a look ,as there are a few alternatives and I am not sure of my memory.

[stevefh]

Hi all, found the Allen key socket it’s 12mm also found a large Allen key 1/2 inch. I know the 12mm socket fits haven’t tried the Allen key yet.

[stevefh]

Hi all, 1/2inch (12.7 cm) doesn’t fit and as Filip says ,it is the same as plug for cam carrier bolts ie it’s 12mm.