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(888) 312-8812 Login SignupThe Peterbilt Engine Cooling Fan Temperature Switch brings fan control back in check by responding to coolant temperature thresholds. When the system reaches a set heat level, this switch signals the fan clutch or electric fan to kick in, keeping things stable without user intervention. The Peterbilt 8039019P is made to match the original spec used in Peterbilt trucks, avoiding issues on activation timing.
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