ACDelco Thermostat Kit.
Truck struggling to heat up? A lot of times this problem is caused by worn out thermostats.
For 2011, 2012, 2013, 2014, 2015, 2016 GM 6.6L Duramax LML
Contains Part Numbers:131-131, 131-163, 94011604
If your truck is not heating up properly you may need to replace the thermostats.
- 131-131 Thermostat - Rear 180 Degrees
- 131-163 Thermostat- Front 185 Degrees
- 94011604 Upper Radiator Pipe Seal