16400-K25-901 TPS Throttle Position Sensor for Motorcycles

OE Number: 16400-K25-901
Compatible: Motorcycle
Product Introduction: As a vital component of motorcycle electronic fuel injection systems, this TPS sensor detects real-time throttle opening angles and transmits accurate signal data to the onboard ECU. The ECU then dynamically adjusts fuel injection volume and ignition timing to accommodate varied riding states including startup, steady cruising and deceleration. It optimizes power delivery and fuel economy, and resolves multiple performance defects brought on by aged or defective original sensors.

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This high-quality TPS sensor, with OE number 16400-K25-901, is a direct replacement that helps restore smooth, responsive performance to your bike’s electronic fuel injection system.
As a vital component of motorcycle electronic fuel injection systems, this TPS sensor detects real-time throttle opening angles and transmits accurate signal data to the onboard ECU. It optimizes power delivery and fuel economy, and resolves multiple performance defects brought on by aged or defective original sensors.

Direct Fit and Easy Installation
This TPS sensor is designed as a direct fit replacement. It matches the original mounting points and electrical connector, so installation is straightforward for most riders and mechanics. You don’t need special tools or extensive modifications — in many cases, it’s a simple swap that can be done in under an hour.
Built for Reliability
We’ve been making automotive and motorcycle sensors since 1997 at our 10,000 square meter facility in Wenzhou. With a team of over 80 people, including experienced R&D engineers, we use advanced equipment like CNC lathes, injection molding machines, automatic welding stations, winding machines, and dedicated test benches. This setup lets us maintain tight quality control and produce up to 190,000 units monthly.
Every Throttle Position Sensor is carefully tested for accuracy, durability, and resistance to vibration, heat, and moisture — all critical factors for motorcycle use. We focus on functionality that matters on the road: consistent signal output, quick response, and long-term reliability even in demanding riding conditions.
Why Riders Choose This TPS Sensor

Restores smooth throttle response and stable idle
Improves fuel economy and power delivery
Reduces hesitation and stalling
Easy to install with direct fit design
Backed by our commitment to quality manufacturing

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Wenzhou Guocheng Automobile Electrical Parts Co., Ltd.

Wenzhou Guocheng Automobile Electrical Parts Co., Ltd. is located in Wenzhou, Zhejiang Province, known as China's capital of auto parts. Established in 1997, the company covers a land area of 3,000 square meters with a built-up area of 10,000 square meters. It is a privately-owned enterprise integrating product development, production, and sales.

Our core products include idle speed motors, idle control valves, throttle position sensors, and other sensor series primarily used in automotive and construction machinery engines. To ensure superior quality, key components such as sensor brushes are imported from Japan and Germany, while films are custom-produced by top-tier domestic and international suppliers. Our products are already supplied to first-tier brands both in China and abroad, and our annual production and sales volume holds a significant position in the OEM market.

To meet production demands and customer requirements, we have continuously invested in advanced production, testing, and experimental equipment from both domestic and international sources. This has significantly enhanced our production inspection and testing capabilities, ensuring consistent and reliable product quality. Currently, we have over 80 employees, including 6 experienced technical engineers and 8 professional technical and inspection personnel, providing strong support for product development and quality control.

Since its inception, the company has adhered to the quality policy of "Continuous Learning, Technological Innovation, Pursuit of Excellence, and Customer Satisfaction." We uphold a "people-oriented" talent philosophy and emphasize a customer-centric approach in quality management, focusing on process control, prevention, continuous improvement, and customer satisfaction. Since 2007, the company has been certified with ISO 9001:2000 and ISO/TS 16949:2009 international quality management system standards.

Over the years, through relentless efforts, innovation, and improvement, Guosheng has earned consistent praise from both new and existing customers for its exceptional product quality, comprehensive service, and competitive pricing. To achieve greater development, our team remains committed to striving harder, learning humbly, and making continuous progress. We constantly summarize experiences and enhance product quality while working with passion and sincerity to collaborate with partners worldwide for mutual success. We sincerely welcome your valuable feedback and visits for guidance.

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