Which Symbol is Best for Post Titles

I need your opinions.

Which Symbol would be best used to separate my Products Post Title.

My Titles are the Products PART # followed by the Year. Since each Part # will fit many years I have to Add the same Part # for each year.

And to avoid Duplicate Post Titles I will be adding the year at end of Part #.

Which symbol should I use to separate the Part # for the year in my TITLE.

| or – or ( )

EXAMPLE
TCCP0002 | 2013
TCCP0002 – 2012
TCCP0002 (2011)