The expansive NAPA® Echlin® sensor line is your go-to source for the form, fit and function demanded by today’s technicians.All state-of-the-art sensors are designed to meet or exceed OE specifications and to deliver exceptional performance and extended service life.

NAPA® Echlin® offers a broad array of sensor coverage including: Air Charge/Manifold Temperature, Accelerator Pedal,Barometric Pressure, Camshaft, Coolant Temperature, Crankshaft, Fuel Vent, Knock, Manifold Absolute Pressure, Mass Air Flow, Throttle Position, Vehicle Speed, Yaw Rate, Ride Height, Taillight, Pedal Stroke, Headlamp Leveling, Air Quality,Battery Current, Rain, Sun Load, Door Pinch, Brake Fluid, Fuel Level and many more.

“You want coverage? You’ve got it. And a whole lot more."

New Sensors Added

New sensors

We recently added several new sensors to our engine management line, including 18 transmission input sensors, 12 transmission output sensors, and 1 steering angle sensor.

To view the full 'New Parts Spotlight', click here.

Accelerator Pedal Sensors

The accelerator pedal sensor assembly combines the familiar accelerator pedal with a dual output sensor for a drive by wire application. The ubiquitous throttle cable is replaced by a pedal position sensor to continuously measure driver input.

High impact ABS plastic provides the best solution to pedal support and spring guide components

Pedal sensor assemblies are 100% tested for output versus pedal position. The slope and linearity of the two separate outputs are accurately checked to ensure correct operation on the vehicle

High strength nylon provides the best solution to pedal support and spring guide components

The multi-finger wiper design accurately controls sensor contact to within a few grams of force

Dual return springs provide redundancy and a comfortable, familiar pedal force profile

Several polymers are used in the construction of the assembly to provide the best combination of strength and support for the spring guide components

Air Charge / Manifold Temperature Sensors

The Air Charge/Manifold Temperature sensor is used by the computer to measure air density for fuel mixture control.  The computer uses this information to trim the air/fuel ratio according to the air density.

100% factory tested to ensure trouble-free performance

Sensor design specifies tight tolerance thermistor response values to assure accuracy of the temperature measurement and proper part operation

Air Bag Clock Springs

An Air Bag Clock Spring is an assembly that contains a spirally wound flat ribbon to allow the steering wheel to be turned while maintaining a constant electrical connection to the driver airbag, horn and other electrical steering wheel mounted controls.

A defective or failing Airbag Clockspring will not affect engine operation but will trigger the SRS light indicating compromised vehicle safety

Manufactured from the finest materials and to the highest standards, producing a quality product with an extended service life

Meet or exceeds the OE for fit, form, and function delivering a flawless install and precision performance

Clockspring removal should be done by a professional and only after the battery has been disconnected followed by a timed electrical system discharge

Complete coverage for import and domestic vehicles with over 100 sensors

Anti-lock Brake (ABS) Sensors

The anti-lock braking system uses an ABS or wheel sensor to monitor the wheel speed and send this information to the ABS computer. The ABS computer uses this information to prevent the brakes from locking during a stop.

NAPA® Echlin® ABS sensor line has complete coverage for domestic and import applications with over 2100 ABS numbers cataloged – and growing.

OE connectors and terminals are used to ensure accurate, water-tight connection to the engine wire harness

Grommets and wire clips are included on the harness to ensure proper mounting and routing within the car chassis

Sensor housing is made from high quality glass reinforced plastic resin with both high temperature and environmental protection resistance

Wire harness comes with protective sleeve to prevent wires from chafing and creating short circuits

Sensors are 100% tested for proper functioning

What makes NAPA® Echlin® ABS Sensors the best.

  • The ABS sensor is typically located in each wheel hub/rotor on a four channel ABS system.Some rear wheel drive applications have the sensor mounted in the rear differential
  • Generally these sensors will fail as a result of clogging from metallic debris, brake dust or dirt due to exposure to the harsh elements
  • A failing sensor can illuminate the MIL or ABS warning lamp, and may cause failure of the anti-lock braking system to operate safely and properly
  • An ABS sensor can be visually inspected and the wire winding and sensor harness can be tested for opens, shorts and proper factory specified resistance with an ohmmeter

ABS Sensors Testing – See how the rest of the pack stacks up

We left no stone unturned; performing extensive laboratory and real life testing that included measuring and comparing shaft speed vs. delta voltage, output voltage and variation to OE, magnetic field strength, air gap, output wave form, pulse width as well as a complete physical product comparison to OE.

The Findings

Competition ABS Sensors

  • No Consistency in signal output performance.
  • Inferior materials in the magnetic circuit which results in low voltage output and can lead to ABS system failure.
  • No Consistency in critical sensor dimensions which establish the gap between the sensor tip and target wheel which can lead to the sensor tip hitting the spinning target wheel causing sensor damage.
  • Inadequate quality inspection and product testing.
  • No Consistency in matching OE for form, fit and critical function.

NAPA® Echlin®: ABS Sensor# 530581 (GM 02-95; ranked in the top 10 sellers) matches OE for output voltage, resistance, trigger wheel gap and all critical fit, form, and function measurables.

Competition: 29%-51% lower voltage output when compared to OE leading to potential ABS system failure. Incorrect mounting bracket does not match OE.

NAPA® Echlin®: ABS Sensor# 530916 (Ford 09-95; ranked in the top 10 sellers) matches OE for output voltage, resistance, trigger wheel gap and all critical fit, form, and function measurables.

Competition: 45%-74% lower voltage output when compared to OE leading to potential ABS system failure. Inconsistent winding resistance, electrical inductance and magnetic field orientation resulting in poor sensor performance. Inconsistent gap between sensor tip and trigger wheel leading to potential sensor tip damage.



Brake Pad Wear Sensors

The Brake Pad Wear sensor, or brake wear indicator, is an added safety feature on many vehicles used to warn a vehicle’s driver if their brake pad’s thickness becomes too low and their useful life is short. Brake Pad Wear Sensors are designed to “fail” as brake pads wear. They should be changed whenever the pads are replaced or when the vehicle’s warning light indicates.

NAPA® Echlin® Imports offers a broad product offering for import brake pad wear sensors.

More than 100 SKUs cover over 2,500 direct applications

NAPA® Echlin® Import Brake Pad Wear sensors are direct OE replacements with perfect fit, finish and function for flawless operation

Camshaft/Crankshaft Position Sensors

The Camshaft sensor determines which cylinder is firing to establish injector synchronization and coil firing sequence in DIS systems. Crankshaft sensors set ignition timing, supply the RPM signal, and determine engine speed.

The best in the business, hands down.

NAPA® Echlin® engineering, manufacturing and testing excellence makes our sensors the best in the business, hands down.

End-of-line testing for timing, pulse width and signal amplitude ensures consistent product performance

Integrated A/D converter and digital signal processing with a dynamically adaptive switch point improves accuracy and operation

Wire harness comes with protective sleeve to prevent wires from chafing and creating short circuits

Custom magnetic circuit programming calibrates the sensor while performance testing for improved timing accuracy between the target wheel and sensor output

Advanced circuitry protects the system from stray electromagnetic fields and power spikes

Camshaft Synchronizer Assemblies

The Camshaft Synchronizer Assembly consists of a Camshaft Position Sensor mounted on an Oil Pump Intermediate Shaft. The Synchronizer is driven off the camshaft, and sends the camshaft rotational position information to the Powertrain Control Module (PCM) to establish injector synchronization and coil firing sequence in DIS systems.

Includes a synchro positioning tool to ensure that the fuel and ignition systems stay in tune with the engine

Complete assembly includes a Camshaft Synchronizer and Camshaft Position Sensor, for an easy, fast installation

Brand new assemblies (not reman) match the original for fit, form and function, ensuring proper operation and performance

100% environmental, endurance and life cycle laboratory tested for timing, pulse width, and signal amplitude ensures consistent performance

Coolant Temperature Sensors

The Coolant Temperature sensor changes resistance with the temperature. The Coolant Temperature sensor is critical to many PCM functions such as fuel injection, ignition timing, variable valve timing, and transmission shifting.

100% factory tested proper resistance value at specified temperature

Primary thermistor wire leads resistance welded to connector terminals to ensure a reliable electrical connection in an environment of high vibration and changing temperature

Precision machined brass housing to maximize thermal conductivity between sensor body and coolant

Glass fiber reinforced plastic polymer connector insures excellent dimensional stability and proper mating connector fit over a wide range of temperature extremes

Housing has tapered pipe threads for a tight fit in the mounting location

Grease is applied inside brass housing to facilitate heat transfer with thermistors

Knock (Detonation) Sensors

Knock sensors create a voltage signal based on the vibrations caused by detonation. The computer uses this signal to retard timing when spark knock occurs.

An automated data acquisition system continuously monitors sensor output to ensure it responds with appropriate voltage at the specified frequency rate

Primary thermistor wire leads resistance welded to connector terminals to ensure a reliable electrical connection in an environment of high vibration and changing temperature

The Sensor body is precision machined to tune the resonant frequency to the engine knock frequency

The Piezoelectric disc is the heart of the sensor. It is a sintered ferroelectric ceramic disc precision ground to tight physical tolerance

All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation

Designed to respond to knock frequencies up to 1000Hz and shifts in engine knock frequency, making it more effective over a broad range of vehicle conditions

MAP (Manifold Absolute Pressure) Sensors

The MAP sensor converts engine vacuum/manifold pressure to an electrical signal so the computer knows how much load the engine is under. This data is the basis for fuel delivery and timing control.

Precise automated wire bonding equipment and inspection processes for repeatable and reliable electrical connections

100% tested prior to shipping for sensor output voltage vs. pressure and response function

The case is high temperature glass reinforced plastic and is designed to create a hermetically sealed cavity for the sensor on one side with the port for pressure on the other

100% tested during the manufacturing process for electronic component assembly and connectivity

Steering Angle Sensors

A Critical Safety Component

The Steering Angle Sensor is an important part of a vehicle’s safety system. It transmits the steering wheel’s rate of turn, wheel angle, and other important data to the specific vehicle's computer. If there is a fault in the signal, the computer can disable the vehicle’s stability control.

Signs of a Faulty Steering Angle Sensor

When a steering angle sensor fails, the vehicle may experience the following symptoms:

  • Excessive play in the steering wheel
  • Steering warning light illuminated in the dash
  • Electronic Stability Control system is disabled

A Solution to Keep Your Stability Control System Enabled

Providing quality-manufactured replacement parts for this important safety category, we offer more than 40 steering angle sensors. To see what makes our steering angle sensors the best, take a look at our SWS124:

  • Direct-fit replacement ensures ease of installation and restoration of proper power steering function
  • High-grade plastic provides durability against extreme conditions provide durability against extreme conditions
  • Copper alloy conductors provide superior electrical conductivity with low resistive losses

Throttle Position Sensors

The Throttle Position sensor moves with the throttle and sends a voltage signal to the computer indicating throttle angle and speed of movement data. The computer uses this data to measure engine load, adjust timing, fuel delivery, EGR, converter clutch operation and clear flood mode.

Throttle Position Sensor on
Electronic Throttle Body

The integrated circuit (IC) is capable of measuring the rotation of a small magnet attached to the throttle shaft and is calibrated to provide accurate, linear output characteristics

Automated test equipment is used to calibrate and electronically lock output voltage accuracy, linearity and slope versus throttle angle

The sensor is sealed from the under hood environment by a custom, elastomeric seal that provides an effective barrier from dust, vapor and liquids found under the hood

The magnet is molded into a high performance polymer to ensure consistent location and low friction with the bearing surfaces

Vehicle Speed Sensors

The Vehicle Speed sensor or VSS measures transmission/transaxle output or wheel speed. The ECM uses this information to modify engine functions such as ignition timing, Air/Fuel ratio, transmission shift points, and to initiate diagnostic routines.

steel drive

Internal bearing promotes trouble free operation and provides stable air gap between trigger element and sensor

Output signal
match to OE

Silicone connector seal retains flexibility and preventes moisture intrusion

Measures transmission/transaxle output or wheel speed and uses this information to modify engine functions such as ignition timing, AF ratio and transmission shift points

Fluorosilicone seal for excellent sealing over a wide variety of temperature conditions

100% end-of-line testing for signal waveform ensures consistent product reliability and performance

Yaw Rate Sensors

A Yaw Rate Sensor (or rotational speed sensor) measures a vehicle’s angular velocity about its vertical axis in degrees or radians per second in order to determine the orientation of the vehicle as it hard-corners or threatens to roll-over.

By comparing the vehicle’s actual yaw rate to the target yaw rate, the on-board computer can identify to what degree the vehicle may be under- or over-steering, and what corrective action, if any, is required. Corrective action may include reducing engine power as well as applying the brake on one or more wheels to realign the vehicle.

NAPA® Echlin® leads the way

The yaw rate sensor is a key component in a vehicle’s stability control or electronic stability control system designed to provide motorists with increased safety, security, and control even in the most difficult driving conditions.

NAPA® Echlin® leads the way, delivering these high-quality, high-technology sensors.

Wide measuring range for effective sensor operation

1 Mbaud/s CAN-signal output for precise performance

Robust product design delivers dependable service life

Tech Expert

The automotive market today includes over 40 vehicle makes, over 400 models and countless variations of those models. Vehicle manufacturers continue to expand electronic componentry as well as the vast array of products needed to service these systems. These additional category opportunities have led to the development of Tech ExpertTM.

Tech ExpertTM is an exciting new brand of enhanced engine control products developed for the professional service technician. Tech ExpertTM was designed to help the technician with new technology, new categories, and problem-solving improvements to the original with a proven quality they can trust.

Tech ExpertTM encompasses NAPA® Echlin® innovation, engineering expertise, superior product quality, meticulous testing, unmatched customer service, competitive pricing, and brand integrity. The qualities that have made NAPA® Echlin® the engine management industry leader for more than 90 years, are at the heart of every Tech ExpertTM part.

The HVAC control module monitors the outside air quality while in AUTO mode using the Air Quality Sensor. There are 2 sensors inside the air quality sensor assembly. A hydro-carbon (HC) sensor that is used for detecting gasoline exhaust fumes and a Nox sensor that is used for detecting nitrous oxide or diesel exhaust fumes. When air quality around the front of the vehicle is poor, the air quality sensor system will send a signal to the HVAC system to begin operation.

Tech ExpertTM offers the aftermarket's best premium Air Quality Sensors, ensuring that when a Tech ExpertTM sensor is installed it means problem solved!

Tech ExpertTM delivers a line of proven-quality Automatic Headlight Sensors. Automatic headlights eliminate the need for the driver to manually switch the headlights on or off. They are activated using a photoelectric sensor that senses lighting conditions at dawn or dusk. When the lighting conditions become too low, the Automatic Headlight Sensors turn the lights on, increasing visibility for the driver.

Trust Tech ExpertTM for a proven-quality solution when replacing this important safety feature.

Tech ExpertTM offers a line of premium Headlight Level Sensors that work with a vehicle's self-leveling headlight system that adjust the headlight height in relation to the vehicle height. If the vehicle's trunk is loaded and the rear is sagging, the vehicle’s lights may shine high. Functioning headlight level sensors adjust to compensate for the rear being low. When the OE sensor fails, headlights will either shine too high or too low, creating a potentially dangerous driving situation for you and other drivers.

Trust Tech ExpertTM to provide the highest-quality replacement solution for a failed Headlight Level Sensor.

Tech ExpertTM offers a line of Humidity Sensors for late model import applications. Humidity sensors work with the vehicle's HVAC system to sense the humidity levels in the cabin and send a signal to the automatic climate control to begin operation.

Always replace a failed humidity sensor with a premium Tech ExpertTM sensor to maintain comfort and proper HVAC operation.

Tech ExpertTM offers a line of OE-specific premium Park Assist Sensors, also known as back-up sensors. Tech ExpertTM Park Assist Sensors are 100% matched to the OE body style. Each park assist sensor is guaranteed to fit and perform just like the original. Each Tech ExpertTM sensor connector is molded into the body just like the OE.

Count on Tech ExpertTM to provide proven-quality solutions for these key safety elements.

Also available from Tech ExpertTM, is our line of premium-quality Rain Sensors. Automotive rain sensors measure the amount of light being reflected and sent back to the sensor. If the glass is wet, less light makes it back and the sensor sends a signal to the wipers to operate. This eliminates the need to constantly adjust the wipers for misty or intermittent rain situations.

With a new Rain Sensor from Tech ExpertTM you will keep your wipers operating efficiently and safely for the long haul.

Adding to Tech ExpertTM growing line of advanced technology sensors comes our Sunload Sensors. The Sunload Sensor works with the HVAC temp sensor located in the passenger compartment. If the sensor detects a high sunlight condition, it will signal the fan to come on at a higher-than-normal level to maintain in cabin temperatures.

Keep comfortable with premium-quality Tech ExpertTM Sunload Sensors.

When an OE transmission oil temperature sensor fails it can affect drivability, transmission service life, and comfort. Often the motorist will complain that the transmission is making a loud noise, the vehicle shifts hard, and the transmission will not shift into overdrive mode. The Tech ExpertTM transmission oil temperature sensor provides the technician with a high-quality, cost-effective, direct replacement for the failed OE part.

If your Ram 5.9L or 6.7L  Cummins powered truck gets a P0106 code or exhibits excessive exhaust smoke and higher exhaust gas temperatures than normal, it may be the Turbocharger Speed Sensor causing the problem. The ECM interprets the signal from the vehicles Turbocharger Speed Sensor to monitor operating speed and determine if the turbo is functioning properly.  If the sensor fails and the turbo falls out of normal operating spec this could result in a very costly turbocharger replacement.  Replace a failed Turbocharger Speed Sensor with a high quality direct replacement Tech ExpertTM unit and prevent unnecessary repair bills.