Unidirectional overrunning clutch Freewheel clutch pulley for VO LVO One-way wheel OE 30667682 Embrague de rueda libre unidireccional
Unidirectional overrunning clutch Freewheel clutch pulley for VO LVO One-way wheel OE 30667682 Embrague de rueda libre unidireccional
Product Description:
Alternator clutch pulley
OE NO.: 30667682
Applicable vehicle type: For VO LVO
The one-way wheel (also known as an overrunning clutch or freewheel clutch) is a critical component fitted to the drive end of an automotive alternator, functioning similarly to a one-way bearing. Mounted directly onto the alternator's drive shaft, it replaces the conventional rigid pulley. This arrangement enables the belt to drive the alternator rotor for electricity generation when the engine is running, whilst allowing the rotor to spin freely when the engine is switched off. This prevents the rotor's inertia from continuing to drive the engine.
The automotive alternator one-way wheel plays a vital role within the vehicle's electrical system, with primary functions including:
- Preventing engine back-torque: This constitutes the core function of the one-way wheel. Upon engine shutdown, the internal clutch within the one-way wheel disengages the alternator rotor from the belt, preventing the engine crankshaft from continuing to drive the alternator rotor.
- Reducing power loss: During engine idling or low-load operation, generator output demand is minimal, yet the rotor continues high-speed rotation via the belt. The one-way wheel permits flexible speed adjustment as engine load fluctuates, preventing unnecessary energy expenditure.
- Protecting the generator and auxiliary components: The one-way wheel safeguards internal generator parts from damage caused by continued rotation after engine shutdown.
- Enhanced driving comfort: The flywheel enables the alternator to cease operation immediately upon engine shutdown, eliminating additional noise or vibration.
- Improved starting performance: By reducing resistance during engine start-up, the flywheel lessens the load the starter motor must overcome, facilitating smoother ignition.
Company Profile:
Beijing Huarui Jietong Trading Co., Ltd. brings 20 years of automotive aftermarket expertise as a professional auto parts supplier. With strategic locations in Beijing, Guangzhou, and Jiangsu, we efficiently meet quality and quantity demands for global customers.

The company primarily focuses on accessories for Land Rover, Jaguar, and VO LVO product series, including Air Conditioning Systems, Braking Systems, Driving Systems, Engine Systems, Cooling Systems, Auto Body Systems, Steering Systems, Suspension Systems, Transmission Systems, and other related parts. Facing the trend of economic globalization, our company is committed to bringing better products and services to the world, providing high-quality products and services for domestic and foreign enterprises and customers.
We welcome any inquiries and look forward to your contact.

- 20 years of specialized auto parts industry experience
- Expert technical team for comprehensive support
- Direct partnerships with repair shops for real-world feedback
- Premium quality parts ensuring reliability and durability
- Extensive inventory with over 500,000+ items ready to ship
- Responsive customer service with quick turnaround
- Customized solutions for specific vehicle requirements
- Professional technical guidance and installation support
- Comprehensive 12-month warranty coverage
- Competitive pricing through optimized supply chains
- Rigorous quality control meeting industry standards
- Efficient global shipping via multiple carriers
Items ship within 3-7 business days via Epacket/UPS/FEDEX/DHL/EMS.
Remote areas may incur additional shipping fees.
Inspect items upon delivery and contact us immediately for any damage.
Russian customers must provide full name; Brazilian customers must provide tax number for courier shipments.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.



