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3550140-K00
HongPro
3550140-K00
The 3550140-K00 is a high-performance Wheel Speed Sensor engineered to deliver critical data for modern vehicle safety and control systems. This sensor is tasked with the precise monitoring of wheel rotation speed, a fundamental parameter for the seamless operation of Anti-lock Braking Systems (ABS) and Traction Control Systems (TCS). By providing accurate, real-time data, it actively helps prevent wheel lock-up during braking and loss of traction during acceleration, thereby significantly enhancing driving stability and safety.
Manufactured to meet or exceed stringent OEM specifications, this aftermarket replacement guarantees optimal performance and a perfect fit. It is built with robust materials to withstand harsh automotive environments, including extreme temperatures, moisture, and vibration. With a high-grade magnetic core and a durable, heat-resistant casing, the 3550140-K00 ensures long-term reliability and consistent signal output. This part is your definitive solution for maintaining the integrity of a vehicle's core safety features.
This sensor is engineered to deliver flawless, real-time wheel speed data, which is the cornerstone for effective Anti-lock Braking System (ABS) and Traction Control System (TCS) operation. It features a high-sensitivity magnetic core and advanced signal processing circuitry that minimizes signal drift and electrical noise. This ensures the vehicle's control module receives a clean, accurate signal for instantaneous decision-making, directly contributing to enhanced braking performance and stability on diverse road surfaces. It's not just a part; it's a critical safety component.
Built to endure the harshest conditions, the 3550140-K00 is constructed with a high-temperature PPS (Polyphenylene Sulfide) housing and a fully sealed connector. It undergoes rigorous validation, including thermal shock testing from -40°C to +150°C and resistance to salt spray corrosion. Independent lab testing confirms a operational lifespan exceeding 100,000 cycles, providing reliable performance against moisture, road salt, gravel impact, and chemical exposure. This resilience translates to fewer fault codes and long-term reliability for your customers.
We eliminate compatibility guesswork. The 3550140-K00 is manufactured to precise original equipment specifications, ensuring a perfect plug-and-play installation. This direct OEM replacement guarantees optimal performance without the need for modifications, saving valuable time for mechanics and ensuring system integrity. Our commitment to quality is verified by a failure rate of less than 0.5% in pre-shipment inspections, a benchmark that underscores our dedication to providing parts you can trust implicitly.
Electrical interference from alternators and ignition systems can disrupt sensor data. Our wheel speed sensor incorporates a multi-layer electromagnetic interference (EMI) shield, effectively blocking external noise. This results in a stable square-wave signal output that the vehicle's ECU can interpret reliably, preventing false triggers and system errors. This technical superiority is crucial for modern vehicles with complex electronic architectures, ensuring consistent performance you can count on.
Trust is built on verifiable quality. Every batch of the 3550140-K00 sensor is subjected to a comprehensive 12-point check, including resistance validation, signal output testing, and mechanical integrity checks. Our production facilities are ISO 9001 certified, and our components comply with international automotive standards such as RoHS. This data-backed approach to quality control provides you and your end-users with the confidence that they are installing a component that meets global performance and safety benchmarks.
| Parameter | Specification | Notes / Standard |
| OEM Part Number | 3550140-K00 | Direct Replacement |
| Product Type | Active Wheel Speed Sensor | With Integrated Electronics |
| Operating Voltage | 4.5V - 20V DC | Compatible with standard vehicle ECU systems |
| Output Signal | Digital Square Wave (2-Wire) | - |
| Supply Current- | 7 mA ~ 14 mA (Typical) | - |
| Air Gap Range | 0.1 mm ~ 2.5 mm (Recommended) | Critical for optimal signal strength |
| Operating Temperature | -40°C to +150°C | - |
| Storage Temperature | -40°C to +160°C | - |
| Protection Rating | IP6K9K | Dust-tight and protected against high-pressure, high-temperature water jets |
| Housing Material | PPS (Polyphenylene Sulfide) | High-temperature, chemical-resistant thermoplastic |
| Sealing Material | FKM (Fluoroelastomer) | Superior resistance to fuels, oils, and chemicals |
| Connector Type | OEM-Specific 2-Pin | Ensures a perfect, waterproof connection |
| Cable Length | Standard OEM Length | Please confirm specific length for your application |
| Electromagnetic Compatibility | E-Marked / ECE R10 Compliant | Certified resistance to electromagnetic interference |
Here are specific application scenarios of Wheel Speed Sensor:
This sensor is fundamental to the ABS. It continuously monitors the rotational speed of each wheel. During hard braking or on slippery surfaces, if the system detects a wheel is about to lock up (a sudden drop in speed), it uses this real-time data to modulate brake pressure. This prevents wheel lock-up, allowing the driver to maintain steering control and significantly reducing stopping distances, especially in emergency situations or on wet roads.
During acceleration, particularly on low-traction surfaces like ice, gravel, or wet pavement, power can be wasted on a spinning wheel. The wheel speed sensor identifies when one wheel is rotating faster than others (indicating slip). The TCS module then automatically reduces engine power or applies brake force to that specific wheel, transferring torque to the wheels with better grip. This ensures stable and controlled acceleration from a standstill or when cornering.
This advanced safety system relies on accurate wheel speed data as a primary input. The ESC compares the driver's intended direction (via steering angle) with the vehicle's actual movement. If a loss of control, like understeer or oversteer, is detected, it strategically applies brakes to individual wheels to help correct the vehicle's trajectory. The 3550140-K00 provides the critical data needed for these split-second, corrective actions.
The sensor enables Hill Start Assist functionality. When stopping on an incline, the system uses wheel speed data to detect the vehicle's stationary position. As the driver moves their foot from the brake to the accelerator, HSA automatically maintains brake pressure for a few seconds, preventing the vehicle from rolling backward. This allows for smoother and more controlled hill starts without stress.
Many vehicles use an indirect TPMS that leverages wheel speed sensors. A tire with low pressure has a slightly smaller rolling radius and thus rotates faster than the others. The 3550140-K00 can detect these subtle speed discrepancies across the axles, prompting the system to alert the driver of a potential under-inflation condition, promoting safety and fuel efficiency.
For optimal performance and safety, always disconnect the vehicle's battery before beginning installation. Carefully remove the old sensor, taking note not to damage the mounting hole. Thoroughly clean the hub assembly area to ensure no metallic debris or corrosion remains, as this is critical for maintaining the correct air gap. Install the new 3550140-K00 sensor by hand to avoid cross-threading, then torque the mounting bolt to the manufacturer's specification (typically 8-12 Nm). Finally, securely reconnect the electrical connector until it clicks into place. After installation, reconnect the battery and conduct a test drive to ensure proper system function.
