This is a complete item list for cleric tanking. The items are ordered from best to worst. Assuming block soft capped and standard raid buffs.
If you feel a item is missing feel free to post it in the comments. However note that I will not add strength/dex accessories.
Also note that the item order will change slightly depending on your gear. You can use this spreadsheet to find your own stat values and item order: https://spreadsheets.google.com/spreadsheet/ccc?key=0AiCDzEFiwLONdEp6WkpibUdSLUJKSFFyU0FKSWE4RXc&hl=en_US#gid=0
And just like the item list here is a complete list of runes for tanking.