We are a leading manufacturer of switches, sensors, and controls for the commercial truck, engine, agricultural, off-road, and industrial equipment markets. Our products monitor, control and protect some of the world’s toughest
equipment.

For over 45 years, Index has built a reputation for designing and producing products that stand up to the harshest, most severe environments. Index Sensors is a supplier to the world’s most demanding equipment manufacturers, including Cummins, Caterpillar, John Deere, all makes of Class 8 trucks, and a wide range of specialty original equipment manufacturers (OEMs).

We continue to expand our focus on helping industrial vehicle manufacturers, equipment OEMs, and end-users to add innovation and efficiency to their products.

Learn more about Index's history here.

Index’s products play an important role “behind the scenes” improving basic machine operation, as well as benefit equipment users with easier operation, diagnostics, and lower maintenance costs. Which is why Index values quality as a top priority in their practice and products.

Index is ISO 9001:2015 certified by Orion Registrar. Index's ISO certification guarantees that every product meets strict quality requirements.

View ISO Certificate

Index Sensors manufacturing facility & headquarters are
located in Arlington, Washington 45 miles north of Seattle on the I-5 corridor. Our building was designed to support Index’s advanced engineering, quality labs, world-class manufacturing processes, and flexible layout.

View on Google Maps