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Ningbo Huizhan Automotive Technology Co.,LTD.
Ningbo Huizhan Automotive Technology Co.,LTD.
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Variable Valve Timing Unit Camshaft Sprocket (VVT) Product Line

At the heart of modern engine performance lies precise control over timing, over fuel efficiency, and over emissions. Our Variable Valve Timing (VVT) Units and Camshaft Sprockets are engineered with this precision in mind, ensuring your engine runs smarter, cleaner, and more efficiently. Backed by years of manufacturing experience, cutting-edge equipment, and strict OEM-level quality standards, we deliver automotive components trusted by clients across Europe and beyond.


Engineered for Performance. Built for Reliability.

Our VVT product line is developed to meet the growing demands of today’s automotive industry. With increasingly stringent emission regulations and a strong global push for higher fuel efficiency, VVT technology has become essential for optimal engine operation. Our VVT units and engine camshaft sprockets are designed to support this shift—delivering dynamic valve timing and seamless engine performance.

Every component we produce is manufactured to meet or exceed OEM specifications. From premium material selection to precision CNC machining, we ensure consistent fit, form, and function. Whether used in gasoline or diesel engines, our products perform under pressure—literally and figuratively.


Why Choose Our Factory?

quality-control.jpg1. OEM-Level Engineering and Quality Control

Our facility operates under OEM-level quality management protocols. Although we are not affiliated with the original vehicle manufacturers, our parts are crafted to meet their exacting standards. We use high-grade materials such as heat-treated alloy steels, advanced surface treatments, and tight-tolerance production practices to guarantee performance and longevity.

The comprehensive approach ensures that every camshaft sprocket and VVT unit we ship out performs flawlessly in real-world conditions.

2. Experienced Technical Team

Behind every high-quality component is a team of skilled professionals. Our engineering team has deep experience in engine timing systems, with backgrounds in both OEM and aftermarket development. We collaborate closely with clients to understand their needs, adjust tolerances or performance specs if required, and provide solutions that meet evolving market demands.

Our R&D capabilities also allow us to develop custom VVT and sprocket solutions for niche applications or new engine platforms.

3. Strict Pre-Shipment Inspection

Before any order leaves our facility, it passes through a rigorous final inspection process. Each lot is checked for mechanical fit, operational accuracy, and cosmetic finish. Only components that fully meet technical standards and customer-specific requirements are cleared for shipment.

This "zero-defect" policy helps us minimize returns, reduce client risk, and build long-term partnerships based on trust and consistency.




A Look at Our Product Range

We manufacture VVT units and camshaft sprockets compatible with leading engine platforms from:


Engine Brand / PlatformCompatible Models / SeriesNotes
BMWN20, N52, N55, B48, etc.Fully compatible with OEM timing systems
Mercedes-BenzM271, M274, M276, etc.Reverse-engineered for perfect fit and durability
FordEcoBoost seriesMatches original vane position and locking mechanisms
Volkswagen / AudiEA888 Gen 3/4Replicates original timing gear profile and functionality
Toyota / Lexus2AR-FE, 1UR-FEEnsures seamless integration with OEM timing system
Other Global BrandsPSA, Hyundai, etc.High compatibility and enhanced durability


All products are reverse-engineered to ensure perfect compatibility with OEM timing systems. From the timing gear profile to the vane position and locking mechanisms, our units replicate original functionality with added durability.


Applications: Serving the Independent Market

Our VVT components and camshaft sprockets are widely used by:

·Automotive parts distributors

·Engine rebuilders and remanufacturing shops

·Repair workshops and garages

·Performance tuning companies

With a strong supply chain and competitive pricing, we support customers in maintaining vehicle reliability and engine performance without the high cost of original parts.


Our Commitment to You

We are your trusted automotive components manufacturer and supplier, providing comprehensive solutions beyond manufacturing,When you choose our VVT units and camshaft sprockets, you’re partnering with a professional supplier committed to delivering:

·Consistent OEM-level quality and full traceability

·Responsive technical support from our engineering team

·Custom manufacturing options to meet your market needs

·Short lead times for bulk production and urgent orders

·Flexible packaging and private label branding services


We always put customers at the center, creating greater value for you at every step from product design to after-sales service. If you are looking for a high-quality and reliable supplier of engine timing systems, we will be a trustworthy choice.