Weichai 612630060035 Coolant Temperature Sensor

The Weichai 612630060035 is an engine coolant temperature sensor designed for precise monitoring of coolant temperature in heavy-duty diesel and natural gas engines. It utilizes a Negative Temperature Coefficient (NTC) thermistor element with a nominal resistance of 2.2 kOhm at 25 degrees Celsius. The sensor features a 4-pin electrical connector and a 10mm metric thread (M10 x 1.0) for installation into the engine coolant passage. The housing is constructed from stainless steel for corrosion resistance and durability in harsh operating environments. It operates on a supply voltage range of 6V to 24V DC and covers a temperature measurement range of 0 to 120 degrees Celsius with a tolerance of ±3 degrees Celsius. The ingress protection rating is IP67, ensuring resistance to dust and temporary water immersion. This sensor provides critical input to the Engine Control Unit (ECU) for fuel injection timing, cold start enrichment, and fan control strategies. This part serves as a direct replacement for Weichai OEM part number 612630060035 and cross-references to Sinotruk HOWO part number 4110001050055 and potential VDO/Continental reference 0281002209. It is widely applied across Weichai WP4, WP6, WP7, WP10, WP12, WP13, WD615, WD10, WD12 series engines, including Baudouin-Weichai co-developed platforms such as 4M06, 6M11, and 6M16. Typical vehicle applications include Sinotruk HOWO C7H/T7H, Shacman X6000/X3000/F3000, Foton Delong X3000, and LGMG MT95 mining trucks.