Engine Sensors & Switches

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For Reference Only - Some Applications May Vary.


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  1. Nitrogen Oxide Sensor 4326867RX - Cummins
    Cummins Nitrogen Oxide Sensor 4326867RX
    Part# 4326867RX OLD# 4326867RXCUM

    Core charge

    Price $600.78
    Ships within 72 hours
  2. Sensor - Nitrogen Oxide 4326870RX - Cummins

    Core charge

    Price $618.88
    Ships within 72 hours
  3. Nitrogen Oxide Sensor 3687930RX - Cummins

    Core charge

    Price $625.01
    Ships within 72 hours
  4. Nitrogen Oxide Sensor 4326872RX - Cummins

    Core charge

    Price $625.01
    Ships within 72 hours
  5. Nitrogen Oxide Sensor 4326873RX - Cummins

    Core charge

    Price $606.73
    Ships within 72 hours
  6. Nitrogen Oxide Sensor 4326874RX - Cummins

    Core charge

    Price $606.73
    Ships within 72 hours
  7. Sensor - NOX Out, Reman 1861423PRX - Paccar Engine

    Core charge

    Price $678.93
    Ships within 72 hours
  8. Nitrogen Oxide Sensor 4326869RX - Cummins

    Core charge

    Price $606.73
    Ships within 72 hours
  9. Sensor Assembly 305-3701 - CAT
    CAT Sensor Assembly 305-3701
    Part# 305-3701 OLD# 3053701
    Price $645.54
    Ships within 72 hours
  10. Lambda Sensor Paccar MX 1791013PE - Paccar Engine
    Price $685.41
    Ships within 72 hours
  11. Sensor, Temperature 4384566 - Cummins
    Price $633.59
    Ships within 3 to 6 weeks
  12. Sensor Temp & Pressure 305-3693 - CAT
    CAT Sensor Temp & Pressure 305-3693
    Part# 305-3693 OLD# 3053693
    Price $600.17
    Ships within 3 to 6 weeks
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Engine Sensors & Switches: The Nerve Centers of a Reliable Truck

Think of engine sensors and switches as the truck's eyes and ears on the road. These components continuously gather data and relay it to the Engine Control Unit (ECU), influencing everything from fuel efficiency to emission control. The main elements in this category usually include:

  • Temperature Sensors: Monitor engine and coolant temperatures
  • Pressure Sensors: Keep tabs on oil, fuel, and air pressure
  • Speed Sensors: Determine how fast the crankshaft or camshaft is spinning
  • Oxygen Sensors: Assess the levels of oxygen in exhaust gases
  • Switches: Control functions like ignition, headlights, and wipers

What Happens When Things Go South?

A malfunctioning sensor or switch can throw a wrench into the works. What kind of symptoms might pop up?

  • Engine misfires or stalling
  • Poor fuel economy
  • Erratic or jerky transmission shifts

Warning lights turning on for seemingly no reason

If these issues arise, it usually means one of the engine sensors or switches has gone rogue and it's time for a replacement or repair.

The Importance of Quality and Compatibility

When it comes to engine sensors and switches, the market is flooded with various brands and qualities. However, skimping on these crucial parts can lead to less reliable performance and even catastrophic engine failure. Always opt for:

  • OEM or Equivalent Parts: These are designed to meet manufacturer specifications.
  • Durability: Ensure the parts can withstand the rigors of the road.
  • Compatibility: Not all parts are universal; make sure they fit the specific make and model.

Routine Checks and Maintenance

Regularly inspecting these components is a straightforward job but can save a lot in the long run. A few quick tips for upkeep:

  • Visual Inspection: Check for wear and tear or loose connections.
  • Electronic Testing: Specialized equipment can quickly diagnose faulty sensors.
  • Regular Replacements: Some sensors, like oxygen sensors, have a limited lifespan and should be replaced as part of routine maintenance.

High-Quality Engine Sensors and Switches at Big Rig Shop

For those who value reliability and top-tier performance, the Big Rig shop offers an extensive selection of engine sensors and switches designed for all kinds of truck models. With a variety of high-quality options available, keeping a truck running smoothly is more feasible than ever. Trust the Big Rig shop to be the go-to source for all engine sensor and switch needs.