Walker Products Sensors

About Walker Products

Walker Products has been an automotive industry fixture since 1946, when the company was founded as a screw machine shop specializing in carburetion components. Over the decades, as engines evolved from carbureted to fuel-injected designs, Walker evolved right alongside them — expanding into ignition systems, engine sensors, and emission control products to meet the demands of modern powertrains. Today, the company headquartered in Pacific, Missouri stands as one of the largest privately owned manufacturers of fuel system components and engine management devices in the aftermarket world.

What sets Walker Products apart is a relentless commitment to OEM-grade quality. The company holds ISO 9001 / IATF 16949 certification and maintains in-house manufacturing, engineering, and product management teams that ensure every part meets or exceeds the original equipment standards it was designed to replace. Walker serves a remarkably broad customer base — from major Original Equipment Manufacturers and co-manufacturers to traditional aftermarket distributors, rebuilders, and everyday DIY enthusiasts — with a catalog that spans more than 20,000 individual SKUs across automotive, heavy-duty truck, commercial vehicle, and specialty "Othermotive" applications such as snowmobiles, marine vessels, and farm equipment.

Ignition & Engine Management Expertise

Walker Products has built a strong reputation in ignition components, and their Spark Plug Wire Sets are among the most popular products in their lineup. These wire sets are engineered to deliver reliable high-voltage current to the spark plugs, helping engines fire cleanly and consistently — a critical foundation for fuel economy and emissions compliance. For technicians working on older and classic vehicles especially, Walker's wide coverage across domestic and import applications is a significant advantage.

On the sensor side, Walker offers one of the most comprehensive selections in the aftermarket. Their Oxygen Sensors and direct-fit O2 sensor replacements help the engine's ECU fine-tune the air-fuel mixture in real time, directly impacting emissions, fuel efficiency, and overall drivability. A failing oxygen sensor is one of the most common triggers for a check-engine light, and Walker's OE-fit designs make replacement straightforward for both professional technicians and home mechanics.

The Engine Crankshaft Position Sensor is another critical component in Walker's arsenal. This sensor tells the engine control module precisely where the crankshaft is in its rotation, enabling accurate ignition timing and fuel injection sequencing. Walker's crankshaft position sensors are manufactured to tight tolerances to ensure clean signal output and reliable engine starts. Rounding out their sensor portfolio, Walker's Mass Air Flow Sensors measure the volume and density of incoming air, giving the ECU the data it needs to calculate the correct fuel delivery — a key factor in both performance and emissions control.

Quality, Coverage, and Support

Walker Products backs their parts catalog with real-world technical support — including instructional videos, technical articles, and an online training center aimed at helping both professional technicians and DIYers install and diagnose parts with confidence. Every part is quality inspected and tested before leaving the factory, and their in-house engineering staff provides ongoing product development to keep pace with new vehicle platforms. Whether you're restoring a classic or repairing the latest model year, Walker's philosophy is straightforward: Do it Right, for all makes and all models.