This lower timing cover with seals installs on the front or your engine. If you are replacing your timing belt/water pump then It would be a good time to swap this out
If your engine has ever had any oil leaks from from the cam seals then chances are your seals will be swollen and soft. Or sometimes the belt rubs on this part causing damage.
This is an aftermarket version of the original part.
Suits all NA/NB 1989-2004