3.0L LM2 Duramax Diesel Engine Coolant Flow Control Valve Genuine GM 40009179
The LM2 Duramax diesel engines feature an advanced Active Thermal Management (ATM) cooling system designed to optimize fuel economy, performance, and emissions. This Engine Coolant Flow Control Valve plays a critical role by precisely controlling the coolant flow from the water pump, ensuring peak efficiency in all operating conditions. It combines a rotary control valve and a block control valve to independently manage coolant flow during warm-up (split cooling), eliminating the need for a traditional thermostat.
The valve directs coolant to critical components such as the turbocharger, EGR system, oil coolers, and heater core to efficiently regulate temperatures. The system also includes a de-gas circuit to remove trapped air, ensuring optimal operation.
Replaces GM Part Numbers: 24001355, 55514504, 55511172, 55512723, 40009088
Fitment: 3.0L Duramax LM2 2020-2022 Silverado/Sierra & 2021-2024 SUV\'s
SHIPPING IS FREE via UPS Ground to the lower 48 US states.
Alaska, Hawaii, Puerto Rico, Guam, APO/FPO addresses will need to email for a shipping quote.
CANADA, MEXICO, & ALL INTERNATIONAL BUYERS WILL NEED TO USE THE GSP (GLOBAL SHIPPING PROGRAM)
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TypeHeater Control ValveItems IncludedGM 24001355 Engine Coolant Flow Control Valve 3.0L Duramax DieselManufacturer Part Number40009179OE/OEM Part NumberGenuine OEM GM 24001355 Engine Coolant Flow Control ValveManufacturer Warranty1 YearInterchange Part Number24001355, 55514504, 55511172, 55512723, 40009088Superseded Part Number24001355, 55514504, 55511172, 55512723, 40009088Features100% Leak tested, Durability Tested, No Drilling or Modifications Needed for InstallationUniversal FitmentNoPerformance PartNoCountry of OriginCzechiaMounting StyleBolt-OnVintage PartNoMaterialMetal, PlasticBrandlococee
