551079B 551079HQ 008476321 Throttle Position Sensor for Volkswagen Passat Corrado Vento

The 551079B (also listed as 551079HQ, 021907385, 008476321, 6PX008476-321, and 53269910) is a throttle position sensor engineered for Volkswagen Passat, Corrado, Vento, and Golf models. 

Quality Control Process
We maintain a comprehensive quality control system covering every stage of production:
Incoming Inspection 
Material verification, component inspection, supplier documentation review
Production Inspection 
In-process monitoring, dimensional checks, functional testing at key production stages
Final Inspection 
Full functional testing, resistance sweep verification, visual and dimensional final check
Delivery Inspection 
Packaging verification, labeling confirmation, final quality sign-off before shipment
This multi-stage approach ensures that each TPS sensor meets design specifications and customer expectations before leaving our facility.

Key Advantages
Direct OEM fit and function – the connector, mounting holes, and shaft alignment match the Volkswagen 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.

It is tested to perform correctly, backed by ISO/TS 16949 and CE certifications, and supported by a comprehensive quality control system. Choose this throttle control sensor for dependable performance and smooth drivability.

Q1. How do I know this sensor will work on my Volkswagen?
This sensor is a direct-fit OEM replacement compatible with VW Golf, Passat, Corrado, and Vento models—just verify your OE number matches 021907385 or similar.

Q2. What is the main function of this TPS sensor?
It detects the throttle opening angle and sends signals to the ECU to optimize fuel injection, ignition timing, and overall engine performance.

Q3. What quality certifications does the manufacturer hold?
The company holds IATF 16949 and ISO 9001 certifications, with over 25 years of experience in engine management components.

Q4. Can I get a sample or trial order before buying in bulk?
Yes, we support small-batch trial orders so you can verify the part's performance in your actual vehicle before committing to larger quantities.

Q5. What after-sales support do you provide?
If any issues arise, our team will quickly intervene, analyze the cause, and provide replacement or other solutions to minimize business disruption.