Seller notes

Fits: 2001 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML Duramax Diesel Are you noticing lower coolant temperatures? Failed thermostats tend to stick open thus causing the engine to run too cool at all times causing poor inefficiency. Consider replacing your thermostats with DMAX High Flow Thermostats - they are a direct fit for GM originals. Designed to open at the same temperature as stock, these thermostats open faster and allow for increased coolant flow. This helps ...

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