GM 40009644 Coolant Flow Control Valve 3.0L LM2 Duramax Diesel Silverado Sierra

**IN STOCK AND READY TO SHIP | OEM LM2 COOLANT VALVE**

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: 40009179, 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 eBay GSP (GLOBAL SHIPPING PROGRAM)

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