Hi, i have a 2006 galant with 120K miles....im about to do the 120K timing belt change, i have following parts
2 Belts
2 Tensioners
1 Idler
1 Water Pump with water pump gasket and water pump gasket sealer/silicone.

i know its kinda of a big job so I was wondering before i give the car and those parts to my mechanic to change...is there anything else that i should look out for or change while i am in the process of changing the belts and water pump?

 

You have probley already done this, But you can Read up on the job and see all what is required. Online or in a Repair Manual.

 

May want to do the crankshaft positioning sensor as well. Is right in there with all of that and kind of hard to get to otherwise.

 

If you are being really thorough, change your serpentine belt and possibly its idler pulley. Definitely inspect the belt for wear, and the idler pulley for play and noise--if either, change it. As for your cam seals, balance shaft seal (if you have one), and front crankshaft seal, most of us wait on the seals until they actually start leaking, but if I were doing this on a car five years older and at 200,000 miles, I would definitely consider changing the seals preemptively. As long as you are working in the area and ordering parts, it may be a good time to replace your valve cover gaskets and your spark tube gaskets. They also start leaking around 100K miles.