ACDelco OE Thermostat Kit.
If your truck is not heating up properly you may need to replace the thermostats.
Includes thermostat party numbers: 131-131 and 131-163
For 2017, 2018. 2019, 2020 GM 6.6L Duramax L5P
If your truck is not heating up properly you may need to replace the thermostats.
Kit Includes:
- 131-131 Thermostat – Rear 180 Degrees
- 131-163 Thermostat- Front 185 Degrees
