Collection: Temperature Sensor

Temperature sensors, organized by part number. This collection covers our temperature sensor range — more than 43 part numbers including coolant temperature sensors (CTS) such as 3845N010-0, 1B16937600030, 89462-20020 and Baudouin 1004163702 / 1005265080.

What the ECU does with the signal

Coolant temperature drives cold-start enrichment, fan control, idle speed and the overheat protection strategy. A sensor that reads cold keeps the engine in warm-up mode (high idle, poor economy, no fan demand); one that reads hot can trigger derate and a false overheat warning. Each sensor is built to OEM specifications with the correct thread, resistance curve and connector, and is checked against the curve before packing.

Buy by thread and curve

Two sensors can share the same thread and read differently — the resistance curve is what matters. Order by part number and tell us the engine model. We supply workshops, fleets, marine service companies and parts distributors in box quantities, with neutral packing available for resale.

Send us the part number, your quantity and your destination port — Contact Us. We confirm fitment and reply with a quotation.