V-Belt tensioner Belt tensioner for Volvo Tensioner bearing pulley OE 31251250 Polea tensora
Product Description:
Tensioner pulley
OE NO.: 31251250 30684344
Applicable vehicle type: For Volvo
The automotive tensioner pulley (also known as a belt tensioner pulley or idler pulley) is a critical component within the vehicle's drive train system, designed to maintain appropriate tension on belts or chains. Typically positioned near engine components such as the timing belt, alternator belt, or air conditioning belt, it applies pressure to the belt via a spring or hydraulic mechanism. This prevents slackening or slippage during operation, ensuring synchronised functioning of all connected components.
Principal Types
1. Automatic Tensioner Pulley
Requires no manual adjustment, automatically adapting to belt length variations
Offers maintenance-free operation, low noise, and compact design
Widely adopted in modern passenger car engines
2. Mechanical Tensioner
Provides tension via torsion or coil springs
Simple construction with lower cost
Requires periodic tension checks
3. Hydraulic Tensioner
Generates tension using hydraulic pressure
Commonly used in timing chain systems
Delivers smoother operation with reduced noise
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 Volvo 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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