Electrical parts and sensors for heavy-duty diesel trucks: pressure sensors for oil, fuel, boost and air, speed and position sensors, temperature sensors, level sensors and senders, gauges, pressure and temperature switches, relays and fuses, wiring pigtails and connectors, and starters and alternators. Sensors show the Cummins, Detroit Diesel, Volvo, Mack or Navistar number they replace. Brands include PAI Industries, Power Products, Delco Remy, Volvo and Cummins. NOx sensors are under Exhaust & Aftertreatment.