Which throw out bearing do I have?

[jenkins71]

Hey guys, just about to complete a 4 speed swap. I have an 18 spline trans, and have a throw out bearing laying around I bought from someone as part of a package deal. I'm wondering if it will fit my 18 spline trans as I know the bearing is different for a 23 spline trans.
So, how do I tell is this throw out bearing is for an 18 or 23 spline?
Thanks!!
Sam

 

[jenkins71]

Any ideas?

 

[440+6]

18 spline have a larger sleeve on the bearing retainer so if it slides on its correct, if it dose not fit its for a 23 spline.
As long as your sure it's not for a Chevy or or something else.
Is there a number on it you can reference?

 

[jenkins71]

Thanks man! Yes, it does fit over the larger sleeve. I figured that would be a good way to test as logically the 23 spline would be smaller. I guess I'm good to go! Thanks!