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M11-3550112
HongPro
M11-3550112
This M11-3550112 is a premium-grade Wheel Speed Sensor engineered for exceptional accuracy and durability. It is a critical component of the Anti-lock Braking System (ABS), providing real-time wheel speed data to the vehicle's ECU to ensure optimal braking performance and stability.
Crafted to meet or exceed rigorous OE specifications, this sensor guarantees precise signal output with a minimal tolerance of ±2%. It features an IP67-rated housing, making it completely dust-tight and waterproof, capable of withstanding harsh under-chassis environments and temperature extremes from -40°C to 150°C.
Built with high-quality materials, it offers excellent resistance to vibration, impact, and electromagnetic interference. This sensor ensures a direct, plug-and-play replacement, restoring full ABS functionality and enhancing driving safety. Each unit undergoes 100% functional testing to ensure reliability and a perfect fit.
This sensor is engineered for flawless integration and precise data transmission. It delivers a highly stable signal with a tolerance of less than ±2%, ensuring the Anti-lock Braking System (ABS) and Electronic Stability Control (ESC) receive real-time, accurate wheel speed data. This guarantees optimal system response and maintains the vehicle's designed safety performance. Its plug-and-play design ensures a perfect fit and function, eliminating complex installation procedures.
Built to withstand the harshest under-chassis conditions, this sensor features an IP67-rated housing, making it completely dust-tight and submersible in water. It is rigorously tested to perform reliably across a wide temperature spectrum, from -40°C to 150°C. The robust shell and high-quality internal materials offer superior resistance to vibration, physical impact, and corrosion, ensuring long-term performance even on rough terrains or in severe weather.
Electromagnetic interference from other vehicle components can cause signal errors. Our M11-3550112 is equipped with advanced internal shielding that reduces EMI by over 90%, providing a clean, uninterrupted signal to the vehicle's ECU. This critical feature prevents false triggering of safety systems and is backed by a 100% electrical function test on every unit before shipment, ensuring zero defect rates in signal output.
We focus on longevity to reduce your long-term costs. The sensing element and high-grade copper wiring are designed for minimal signal decay over time. With a designed service life exceeding 150,000 kilometers or 5 years under normal operating conditions, this sensor provides exceptional value and peace of mind, outperforming many generic alternatives in durability and consistent performance.
| Specification Category | Detailed Parameter |
| Part Number | M11-3550112 |
| Product Type | Active Wheel Speed Sensor |
| Operating Voltage | 4.5V - 20V DC |
| Output Signal | Digital Square Wave (2-wire) |
| Signal Amplitude | Proportional to Wheel Speed |
| Air Gap Tolerance | 0.5 mm - 2.0 mm (Recommended: 1.0 mm) |
| Operating Temperature | -40°C to +150°C (-40°F to +302°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Protection Rating | IP67 (Dust-tight & Water Immersion Resistant) |
| Housing Material | PPS (Polyphenylene Sulfide) with Glass Fiber |
| Connector Material | PBT (Polybutylene Terephthalate) |
| Seal Material | Fluorosilicone Rubber (FVMQ) |
| Electrical Connector | OEM-specific 2-pin plug (Pre-coded for correct fitment) |
| Thread Size | M11 x 1.5 (Standard) |
| Accuracy Tolerance | ±2% (across operating temperature range) |
| Electromagnetic Compatibility | Compliant with ISO 7637-1 & ISO 11452-2 standards |
| Vibration Resistance | 30G (tested per SAE J575) |
Here are specific application scenarios of Wheel Speed Sensor:
This sensor is fundamental to the Anti-lock Braking System (ABS). During hard braking or on slippery surfaces, it prevents wheel lock-up by monitoring the speed of each wheel. If a wheel is about to lock, the system modulates brake pressure. This maintains steering control and can reduce braking distances by up to 30% on low-traction surfaces, significantly enhancing driver safety in panic-stop situations.
It plays a key role in the Traction Control System (TCS). When accelerating on uneven or low-grip surfaces like ice, gravel, or wet roads, the system detects if a drive wheel is spinning faster than others. It then automatically reduces engine power or applies brake force to that wheel, restoring grip and ensuring stable acceleration, preventing potential skids or loss of vehicle control.
This sensor provides critical data for the Electronic Stability Control (ESC) or Electronic Stability Program (ESP). By comparing the driver's intended direction (via steering angle) with the vehicle's actual direction, the ESC can detect a skid. It then individually applies brakes to specific wheels, generating a counteracting force to help steer the vehicle back on course, which is proven to reduce loss-of-control accidents by up to 25%.
The accurate data from this sensor is the foundation for many modern features. It is essential for systems like Hill Start Assist (HSA), which prevents rollback on inclines, and provides the necessary speed input for advanced, radar-based safety systems. A faulty sensor can disable or impair the performance of these integrated safety networks.
Safety First: Securely lift the vehicle and disconnect the negative battery terminal.
Remove the Old Sensor: Locate the faulty sensor, disconnect its electrical plug, and carefully unscrew it. If seized, avoid damaging the mounting thread.
Prepare & Install: Thoroughly clean the mounting hole. Hand-thread the new M11-3550112 sensor to prevent cross-threading, then tighten it to the specified torque of 8-10 Nm (5.9-7.4 lb-ft). Over-tightening can damage the sensor.
Reconnect & Test: Firmly reconnect the electrical plug until it clicks. Reconnect the battery. Before driving, start the vehicle to ensure the ABS warning light on the dashboard turns off, indicating a successful installation.
