I have searched these and other forums and cannot find an answer; I'm a bit of a novice:
I am going to replace my 2004 Rainier's 5.3L water pump. When I called the local parts store for a price they asked me if I need the pump with the 2.05" or 1.88" diameter thermostat outlet. Huh? Then I searched online for the pump and found the same two choices!
#1) How do I know which one to order?
#2.) Do I **NEED** to order the bolt kit I see advertised with the pump, or is it optional?
Thanks in advance! -Tony