Help Identifying Parts (pics)

[nctexan]

I can't remember or figure out where the heck I took these off of. Does anyone recognize them?

:aigo:

 

[92TealSupra]

It holds the Timing belt pulley on the bottom end of the motor so it can't come off.

 

[nctexan]

Yikes! Thanks man! Looks like I get to take plenty of stuff back off!