Fits: 2001 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML Duramax Diesel

Is your truck running a little warmer than it used to? Do you have high miles on your truck? Perhaps it's time for some new thermostats. These OEM GM replacements will perform like when the truck was new. We highly recommend replacing these especially when upgrading your water pump and other cooling system components. 

Specifications:

• Part# 97241129 Opens at 185º
• Part# 97241130 Opens at 180º
  

Notes: 

• Sold as a set
• The oil filler tube and upper coolant pipe seals are not included. They are highly recommended to be replaced during a thermostat replacement to prevent leaks.

Replaces Part#:

• GM 97241129
• GM 97241130