OE/Part Numbers : 13411433625, 0280140533, 0280140544, 0280140573, 9127206, 912720
Compatible Brands: for BMW
Compatible Vehicles & Years:- for BMW 3 Series / for BMW 5 Series / BMW 7 Series / BMW Z3
Type: Stepper Motor Idle Air Control Valve
Key Functions: This idle air control valve regulates the engine's idle speed by controlling the amount of air bypassing the throttle body.
Features & Advantages:1.Direct OEM Fit & Function. 2 .High-Quality Components for Reliability. 3.Rigorous Quality Control.
More Details
Key Features
FAQ
This OEM-spec Idle Air Control Valve is designed for BMW engines using part numbers 13411433625, 0280140533, 0280140544, 0280140573, and related references. It functions as a critical idle regulation component, controlling bypass air during throttle-closed conditions. Built with high-precision stepper motor control and reinforced shaft guidance, it ensures accurate idle correction signals from the ECU. The valve body is engineered with anti-carbon adhesion coating to reduce sticking caused by oil vapor and combustion residue. Each unit is dynamically tested under simulated engine load conditions to verify idle stability response. It restores proper cold-start behavior and prevents unexpected engine shut-off at low RPM.
Q1: What happens when this IAC valve fails?
Typical failures include low idle, engine stalling at traffic lights, or inconsistent RPM behavior during warm-up.
Q2: Are all listed OE numbers interchangeable?
They are cross-referenced within BMW IAC system variants, but compatibility still depends on engine code and intake system design.
Q3: What causes most IAC valve failures?
Carbon buildup, oil vapor contamination, and internal stepper motor wear are the most common causes.
Q4: Can this valve fix cold start stalling?
Yes, if the issue is related to air bypass control during enrichment phase.
Q5: Is ECU reset necessary after replacement?
Yes. Idle adaptation reset improves response stability after installation.
Q6: Do you perform batch testing or unit testing?
Both. Units are individually tested for coil resistance and response timing, plus batch airflow calibration checks.
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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