Product Overview

The coolant temperature sensor, OEM number 13621709967, is fitted across a wide range of classic BMW models, including the E28 5 Series, E30 3 Series, E23 7 Series, E24 6 Series, E32 7 Series, and the M3, M5, and M6, spanning production from the late 1970s through the mid-1990s. Since this sensor covers so many classic BMW chassis codes across nearly two decades, it's a steady part to stock for anyone servicing classic and enthusiast BMW vehicles.

Worn or failing units typically show up as an inaccurate or non-functioning temperature gauge, the engine cooling fan not activating properly, decreased performance, or the engine running erratically or stalling. GSK Auto manufactures this sensor to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

0280130026, 13621357414, 13621433076

(Confirm against your VIN or chassis code before ordering - this sensor spans a very wide range of classic BMW chassis codes across nearly two decades, so it's worth double-checking the exact model and year before ordering at volume.)

What Is a Coolant Temperature Sensor?

Function: The coolant temperature sensor monitors the temperature of the engine's coolant, sending that data to both the dashboard temperature gauge and the engine control unit for use in fuel control, cooling fan operation, and vehicle diagnostics.

Working Principle: This thermistor-based sensor, typically located in the thermostat housing or a coolant hose, changes electrical resistance as coolant temperature rises and falls, and that resistance change is read by the ECU and dashboard gauge to display and act on the current coolant temperature.

Importance: Because this single sensor feeds both the driver-facing temperature gauge and the ECU's fuel and cooling fan control logic, a failing sensor can cause both an inaccurate gauge reading and improper engine management, potentially leading to overheating if the cooling fan doesn't activate correctly.

Common Failures & Signs: Thermistor element degradation causing inaccurate resistance readings. Temperature gauge reading incorrectly or not at all. Cooling fan failing to activate at the proper temperature. Engine running erratically, stalling, or an illuminated warning light related to coolant temperature.

Key Features

OEM-standard fitment - matches factory sensor resistance curve (2500 OHM at 20°C) for the 13621709967 application.

Precision manufacturing - metal and plastic construction built for durability and accurate temperature reading.

Long service life - built to handle sustained heat and coolant exposure.

Excellent fitment - direct bolt-in replacement, no modification required.

Corrosion resistance - construction resists coolant and moisture exposure.

Reliable performance - consistent, accurate temperature signal matching factory calibration.

Benefits

Importers - steady demand from a wide range of classic BMW models kept in enthusiast and long-term service.

Wholesalers - reliable repeat-order item across nearly two decades of BMW chassis codes.

Repair Shops - OEM-spec fitment reduces comeback risk on cooling system jobs.

Distributors - private label packaging available for building a branded catalog.

End Customers - accurate temperature readings and reliable cooling fan operation.

Packaging & Shipping

Standard export packaging, sized for a sensor component. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This sensor is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing coolant temperature sensors for classic BMW E28, E30, E23, E24, or E32 models? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.