Factory Custom Wholesale Eccentric Shaft For BMW N20 N20B20 2.0T V4 Petrol Engine OE 11377630747

Product Parameters

Product Display

Advantages and Application

Core Advantages

1. Precise Motion Conversion & Control

• Converts rotary motion into linear/oscillating movement with high precision via its offset design.
• Enables stepless or stepwise adjustment of mechanical parameters (e.g., valve lift, compression ratio).
• Delivers accurate, repeatable motion ideal for complex engine control systems.

2. Compact & Flexible Design

• Integrates onto existing shafts without needing a crank mechanism, saving space.
• Fits easily in cylinder heads and engine blocks, ideal for modern compact engines.
• Supports modular designs for variable systems (Valvetronic, VCR).

3. Optimized Engine Efficiency

• Valvetronic: Continuously adjusts intake valve lift, replacing the throttle body to reduce pumping losses and improve fuel economy by 10–15%.
• Balance Shafts: Counters second-order vibrations, enhancing smoothness and enabling higher RPM operation.
• VCR/Atkinson Cycle: Adjusts piston stroke for optimal expansion/compression ratios, boosting efficiency.

4. Enhanced Performance & Responsiveness

• Optimizes air-fuel mixing across all RPMs, increasing low-end torque and high-end power.
• Delivers instant adjustments for better throttle response and drivability.
• Reduces valve train friction and wear in high-performance engines.

5. Durability & Stability

• Manufactured from high-strength alloy steel for heat and fatigue resistance.
• Distributes loads evenly for stable operation under vibration and high temperatures.
• Precision bearings minimize friction and extend service life.

6. Compatibility with Advanced Systems

• Integrates seamlessly with electronic control (ECU, sensors) for smart, real-time adjustments.
• Works with VVT, VVL, turbocharging, and hybrid systems.
• Supports future engine technologies (VCR, variable stroke).

Application Scenarios

1. Valvetronic Variable Valve Lift Systems (BMW)

• Advantages: Stepless valve lift control (0.25–9.7 mm), eliminates throttle losses, improves efficiency and power.
• Applications: BMW N52, N55, B48, B58 engines; 3 Series, 5 Series, X3, X5.

2. Engine Balance Shafts

• Advantages: Reduces second-order vibrations, improves NVH, allows larger displacement inline-4 engines.
• Applications:
  • Single balance shaft: Small to medium NA inline-4 engines.
  • Dual balance shafts: Large-displacement inline-4, turbo, and diesel engines.

3. Variable Compression Ratio (VCR) Engines

• Advantages: Adjusts compression ratio (8:1 to 17:1) for power/efficiency balance.
• Applications: Nissan VC-Turbo, advanced hybrid engines.

4. Multi-Link / Extended Expansion Engines (Honda EXlink)

• Advantages: Varies stroke per cycle for high expansion ratios and efficiency.
• Applications: Honda EXlink cogeneration units, next-gen high-efficiency engines.

5. Diesel & Heavy-Duty Engines

• Advantages: High strength, wear resistance, stable valve control.
• Applications: Commercial trucks, construction machinery, marine engines.

6. High-Performance & Racing Engines

• Advantages: Lightweight, low inertia, precise high-RPM valve control.
• Applications: Touring cars, endurance racing, modified performance engines.
  
  
  

Conclusion

The automotive engine eccentric shaft is a versatile component that delivers precise motion control, compact design, and significant efficiency and performance gains. It is essential to modern systems like Valvetronic, balance shafts, and VCR, making it key to developing fuel-efficient, powerful, and smooth engines.

Neutral product packaging

Kusma Brand Packaging

Customized Service

Shipping photo

One-stop service

Advantages

Exhibition

Automotive Aftermarket Products Expo (AAPEX 2025)	AUTOMECHANIKA Shanghai 2025	Automechanika Istanbul 2025
INA PAACE Automechanika Mexico 2025	InterAutoMechanica 2025 (formerly INTERAUTO)

FAQ

Q1.Are you a factory or trading company ?

A:We are manufacturer specializing in the research and development, production, sales and service of pistons , Engine bearing. And we also sell other engine parts ,now We have some high-quality partner factories, we can provide one-stop service.

Q2.Whether you could customized production ?

A:Yes, you can tell me your requirement , we can according to your requirement to customized production , but you order quantity need meet our MOQ.

Q3.What is your delivery time ?

A:If we have this item in stock , we can mail it out within 3-5 days . if you need customized production ,in general 20-30 days .

Q4.Can I get a sample ?

A:Yes , we can send a sample for you test if we have this engine parts in stock .

Q5.How to guarantee the quality of your products?

A:1) Strict detection during production.

2) Strict sampling inspection on products before shipment and intact product packaging ensured.

Q6. What are your advantage ?

A:High quality control ,sufficient inventory ,competitive price ,OEM/ODM service,professional team and advantage technology.

Q7.What is your terms of packing?

A:Generally, Strong boxes neutral Packing , Or KUSIMA or Customization according to your request.

Q8.What is your terms of delivery?

A:EXW, FOB, CFR, CIF, DDU. DPA

Q10.What is your terms of payment?

A:T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q11.What is your minimum order? (MOQ)

A:If have stock,one piece is okay. If don’t have stock,we will produce for you. Different item,different MOQ.

Q12.If we can't find a required product on website,how can we do?

A:You can contact us and tell us OEM part number,we will check for you.