Belt tensioner pulley Tensioner bearing pulley for VO LVO V-ribbed belt set OE 31339795 Polea tensora
Product Description:
Tensioner pulley
OE NO.: 31339795 31251743
Applicable vehicle type: For VO LVO
The automotive tensioner pulley is a critical component within the engine's drive train system, designed to automatically regulate the tension of the timing belt or auxiliary belts. This ensures the belts operate stably under appropriate tension. It effectively compensates for elongation caused by wear and ageing, preventing slippage and tooth skipping, thereby safeguarding the proper functioning of auxiliary components such as the alternator, air conditioning compressor, and water pump.
As a wear part, the tensioner pulley is typically recommended for replacement alongside the belt to ensure long-term reliable operation of the drive system.
The tensioner pulley continuously applies appropriate pressure to the belt via an elastic clamping mechanism:
- Dynamic adjustment: The tensioner presses against the belt and follows its movement, altering the pulley wrap angle to automatically adjust tension and compensate for belt elongation.
- Resistance damping: An internal resistance mechanism (such as a torsion spring) absorbs vibrations generated during belt operation, preventing premature wear. Torsion spring parameters directly influence torque and resistance; optimising the mean diameter through proper design enhances resistance values.
- Pressure Retention: Utilises springs or hydraulic pressure to generate sustained tension, ensuring the belt presses against the drive pulley at optimal pressure to guarantee transmission torque and friction.
Core Function: Maintains optimum belt tension – insufficient tension causes slippage and tooth skipping; excessive tension accelerates belt and bearing wear.
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.
Our Advantages
- 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
Frequently Asked Questions
Shipping Information:
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.
Warranty & Support:
12-month warranty included with professional after-sales support for any product inquiries or issues.
Import Notes:
Import duties, taxes, and charges are not included in shipping costs and are the buyer's responsibility.
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Belt tensioner pulley Tensioner bearing pulley for VO LVO V-ribbed belt set OE 31339795 Polea tensora Images
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