1071403 988F9B989BB YS4Z9B989BB SW-S-N3402 for Ford Focus Escape Mercury Mariner

The 1071403, 988F9B989BB, YS4Z9B989BB, 988F-9B989-BB, TPS274, and SW-S-N3402) is a throttle position sensor engineered for a broad range of Ford and Mercury vehicles. 

Advanced Equipment
We are equipped with first-class processing, inspection, and testing machinery, including CNC lathes, vertical injection molding machines, automatic welding machines, stator assembly riveting machines, automatic winding machines, stepper motor test benches, and high-low temperature test chambers. This forms vertically integrated capabilities that cover R&D, production, and sales.

Scale and Output
Our monthly output reaches up to 190,000 units of stepper motors, sensors, and idle air control valves, meeting the demands of global customers.

Industry Heritage
With over 25 years of deep cultivation in the automotive electrical sector, our core management and technical team boasts an average of over ten years of industry experience, providing a solid foundation for high product quality and stable operation.

Quality Assurance
Through a rigorous testing process, we ensure that each product meets strict quality standards and meets design specifications and customer expectations. Our quality control procedures include:

Incoming material inspection – verification of all components before production

In-process quality control – monitoring during key production stages

Final inspection – comprehensive functional testing of each unit

Delivery inspection – final quality sign-off before shipment

Key Advantages
Direct OEM fit and function – the connector, mounting holes, and shaft alignment match the Ford and Mercury factory specifications exactly. Bolt it on and plug it in—no modifications or calibration required.

High-quality components for reliability – the internal potentiometer uses a long-life conductive plastic track, tested to withstand 1 million cycles without significant wear. The housing is constructed from glass-filled PBT, resistant to underhood heat and chemicals.

Rigorous quality control – each TPS sensor is 100% inspected before shipping, not batch-sampled. Every unit passes resistance sweep tests at both room temperature and extreme conditions to confirm stable output.

Q1. Is this sensor a direct fit for my Ford or Mercury vehicle?
Yes, it is an OEM direct-fit replacement—the connector, mounting holes, and shaft alignment match factory specifications exactly, requiring no modifications or calibration.

Q2. How does this TPS sensor improve my vehicle's performance?
It detects the throttle opening angle and sends precise signals to the ECU to optimize fuel injection and ignition timing, restoring smooth engine response.

Q3. What quality tests does each sensor undergo?
Every unit is 100% inspected, not batch-sampled, passing resistance sweep tests at both room temperature and extreme conditions to confirm stable output.

Q4. What materials are used to ensure durability?
The internal potentiometer uses a long-life conductive plastic track tested for 1 million cycles, and the housing is made of heat- and chemical-resistant glass-filled PBT.

Q5. What is the company's background in manufacturing this part?
With over 25 years of experience and ISO/TS 16949 certification, the company produces up to 190,000 units monthly using advanced equipment and rigorous quality control.