Nightrock,
Mura lang ang replacement part. Basta test it first before installing it in your engine para sure and para isang labor cost lang.

How to test:
Parang nagluluto ka ng hardboiled egg.
1. Put it in a pan with water
2. Boil the water (kumukulokumukulo)
3. Check mo kung umurong ang spring sa thermostat, making way for the water to pass through.

The idea behind this is to let water circulate into your engine once it is warmed up.

HTH, goodluck!