90035877 | Genuine Kalmar Ottawa® DEF Sensor Head Assy 40 MICRON, 18" Brake Compressor The valve directs coolant flow

The valve directs coolant flow to control how much cooling or heating different parts of the system receive

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YUKON XL/DENALI XL/ESCALADE ESV

Works hand-in-hand with other systems like:

These noises often indicate a loose clip or mounting screw inside the headliner

90035877 | Genuine Kalmar Ottawa® DEF Sensor Head Assy 40 MICRON, 18" Brake Compressor The valve directs coolant flowDescription: A DEF (Diesel Exhaust Fluid) Sensor Head Assembly 90035877 is a critical emissions control component in modern diesel engines equipped with Selective Catalytic Reduction (SCR) systems. It monitors and manages various aspects of the DEF tank and fluid, ensuring that the vehicle meets emissions regulations by properly injecting DEF into the exhaust stream. DEF Sensor Head Assy 40 MICRON, 18" For E ONE, Capacity, Kalmar Ottawa, Lodal, REV