Detroit Diesel 23503827 Thermostat Assembly

The Detroit Diesel 23503827 thermostat regulates engine coolant temperature at 160 degrees Fahrenheit (71 degrees Celsius). It is a non-vented design constructed with stainless steel and copper components for corrosion resistance and reliable sealing. This component serves as a direct replacement for OEM part number 23503827 across Detroit Diesel Series 50, Series 60 (12.7L and 14.0L), Series 149 (8V, 12V, 16V), and IL71 engine platforms. The thermostat undergoes precision calibration to ensure accurate opening temperature and flow control, meeting OEM specifications for heavy-duty diesel applications. Cross-reference interchange includes PAI 681829, PAI 681848, Interstate-McBee A-23503827, FP Diesel FP-23503827, and Mahle THD171. Package weight is approximately 0.23 kg with a height of 7.92 cm and diameter of 5.72 cm.