What Is This Part?

[blandy 29]

I have a tiny leak coming from where the speedo housing sits on the gearbox. So removed the speedo housing today in order to replace the o ring and also driveshaft seal while its off. With the housing on the bench this popped out

 

 

Any ideas as to what it is and its purpose?

[welshpug 1,661]

where was it?

[blandy 29]

Sat in the speedo drive housing , the side that bolts to the diff cover. It's a perfect od for the casing and was a snug fit I gave it a little push from the other side and it just popped out

 

[blandy 29]

Here it is back where it came from

 

[blandy 29]

For reference it's a ab Motorsport built short ratio box. Just can't work out what it's purpose could be?

[welshpug 1,661]

me neither, odd shape to be any kind of spacer or shim

[blandy 29]

Well if you don't know I'm stuffed lol.

 

so normally there's nothing there just the driveshaft seal on the smaller end and the o ring on the larger end (which I had leaking)

 

It doesn't even interfere with the plastic drive as that is centralised by it sitting on the diff so very odd the only reason I touched it is because it had a tiny dent in it so was tapping it to straiten it out a little and it just fell out otherwise I probably wouldn't of payed it any attention.

[allanallen 528 2 Cars]

Weird, I've had that off when I had it and never even noticed it to be honest!

 

Bin it!

[S@m 156]

Kinda looks like the part marked 'NFP' in this diagram; http://i.imgur.com/1i55byl.png

Has the same offset centre anyway but i've never seen one myself.

Edited June 1, 2015 by S@m

[blandy 29]

Ah yeah id say that was it in that diagram, still cant see what it does though.

 

Its 2nd time ive had the housing off and i never noticed it the first time either

[koti 7]

One of my 1.6 be3 boxes had one of those- I was equally confused! Ended up binning it as it had got slightly damaged and was stopping the speedo drive seating properly