Product Description:

 
Expansion water hose
OE NO.:   31319441 31319444

Applicable vehicle type: For Volvo

The expansion tank pipe, also commonly referred to as the expansion reservoir pipe or expansion tank connecting pipe, serves as a critical link within the automotive cooling system. It connects the expansion reservoir to the radiator and engine cooling lines, playing an essential role in maintaining coolant circulation and system pressure stability.

Core Functionality

• Enables coolant circulation and volume regulation: As the primary connecting conduit, it establishes a pathway between the expansion reservoir and the radiator, as well as the engine's rigid cooling lines. When engine operation causes coolant to heat and expand, it directs excess coolant into the expansion tank for storage. As coolant cools and contracts, stored coolant is returned to the main cooling system, preventing insufficient coolant levels.
• Maintains System Pressure: Works with the expansion tank to preserve pressure equilibrium within the cooling system. It prevents excessive pressure buildup during coolant heating, averting coolant spray or damage to cooling components. simultaneously ensuring adequate pressure at the water pump inlet. This minimises vapour bubble formation on the suction side due to low pressure, thereby preventing cavitation damage to components.
• Auxiliary air trap prevention: During coolant circulation, it assists in directing trapped air within the system into the expansion tank. This reduces the likelihood of air pockets forming within the cooling system, preventing reduced heat dissipation efficiency caused by air traps and ensuring stable engine cooling performance.

Multiply Brands Auto Parts We Offer:

Why choice us:

1. Industry Experience: 20 years of experience in the auto parts industry, with in-depth market and product knowledge.

2. Professional Team: A team of experienced experts who can professionally answer all customer inquiries about auto parts.

3. Direct Partnerships: Direct partnerships with multiple auto repair shops, offering first-hand industry feedback and technical support.

4. High-Quality Products: Providing high-quality auto parts to ensure reliability and durability.

5. Comprehensive Inventory: A wide range of product lines and ample inventory to meet diverse customer needs.

6. Quick Response: Offering rapid response services to quickly address customer questions and needs.

7. Customized Services: Providing customized part solutions to meet specific vehicle or customer requirements.

8. Technical Support: Offering professional technical support and installation guidance.

9. After-Sales Service: A strong after-sales service network to ensure customers receive necessary support after product use,If you have any questions after receiving the goods, please contact us in time and we will provide the best solution.

10. Price Advantage:Competitive pricing due to long-standing supply chain relationships.

11. Quality Assurance:All products go through strict quality control processes to meet industry standards.

12. Fast Shipping: Over 500000+ in stock, we can ship them in a short time.

Company Profile:

Beijing Huarui Jietong Trading Co., Ltd. has been engaged in the automotive aftermarket for 20 years and is a professional supplier of auto parts. Located in the capital of China, Beijing, we have factories in Beijing, Guangzhou, and Jiangsu, which enable us to meet our customers' demands for quality and quantity in a timely and efficient manner.
 

 
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.
 
 
 

 
 
 
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