Index's temperature sensors have custom programmable outputs. They offer accurate, fast response with electromagnetic noise resistance. Configurations can have either single or dual outputs (sourcing or sinking); analog or PWM output with multiple functions in one device or SAE J1939 CAN Bus communications.

Tested to IATF standards at our manufacturing facility, Index's temperature sensors offer dependable monitoring for your engine's coolant, oil, or air temperature.

Applications include: Engine intake air sensing, Cooling fan & warming light, High- and Low- temp interlocks, Time-delay switching, HVAC control, Hydraulic fluid limits, Engine oil temp, Transmission fluid temp, and Differential fluid protection.

Images of Index's Temperature Sensors

How to Order

Part of our company mission is to provide best-in-class quality while creating a positive impact with each of our customers at every stage of the order process.

Customer support representatives are available to assist you with your order. They can answer your questions about orders in process and the availability of new or existing products. Reach our representatives toll free at (800) 726-1737 or via email:

Original Equipment Manufacturers (OEMs)

Index provides components and custom-engineered products to OEMs in a variety of fields: heavy-duty highway (truck & bus), automotive, construction, agriculture/lawn care, marine, defense, and assorted industrial applications. If your company is an OEM or if you need particular performance characteristics or design features for your application, give us a call at (800) 726-1737 or contact us via email at:

Aftermarket Independent Distributor

In addition to OEM distributors, our products are also carried by independent heavy-duty parts distributors all over the world. Some parts can be rushed for next-day delivery. Contact us to locate a distributor near you.

Aftermarket Heavy Vehicle Dealers

Index parts are carried by OEM dealers and distributors. Contact your local OEM truck dealer to purchase.