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{"title":"Womala Electrical Fan 31261986 Cooling Fan for Volvo S40 V50 C30 Cooling Auto","imgUrl":"https:\/\/img.chinax.com\/nimg\/74\/77\/b7dbb72dc0b68dcdef7875330003-200x200-1\/womala_electrical_fan_31261986_cooling_fan_for_volvo_s40_v50_c30_cooling_auto_parts.jpg","attrs":{"Brand Name":"Womala","Model Number":"31261986","Certification":".","Place of Origin":"China"}}
{"title":"Womala Radiator Engine Hose 31319145 Cooling Hose for Volvo V40 Cooling Auto","imgUrl":"https:\/\/img.chinax.com\/nimg\/93\/72\/4830358cedde8d858c0d82d5c590-200x200-1\/womala_radiator_engine_hose_31319145_cooling_hose_for_volvo_v40_cooling_auto_parts.jpg","attrs":{"Brand Name":"Womala","Model Number":"31319145","Certification":".","Place of Origin":"China"}}
Womala Coolant Reservoir 31338291 Expansion Tank for Volvo XC60 S90 V90 XC90
The Coolant Reservoir (Expansion Tank, OE Number: 31338291) is a key component of the engine cooling system, engineered for Volvo XC60 (18–), S90 (17–)/S90L, V90 (17–)/V90 Cross Country, and XC90 (16–) models. As an OE-grade part, it is installed in the engine bay (typically near the radiator or firewall) and connected to the radiator via hoses. Its core role is to store excess coolant expanded by engine heat, provide a buffer for coolant level fluctuations, and allow air to escape from the cooling system—ensuring the system remains fully filled and maintains stable pressure for efficient heat dissipation.
Constructed from high-temperature-resistant, anti-corrosive plastic (resistant to engine coolant chemicals and long-term heat exposure), this reservoir features a transparent or semi-transparent body for easy coolant level inspection. It includes a sealed cap with a pressure relief valve (matching the cooling system’s pressure specifications) to prevent coolant boiling and leaks. The component adheres to Volvo’s strict dimensional standards, ensuring seamless fit with factory hoses and mounting points, and avoids cracks or deformation even under high engine bay temperatures.
Core Functions
Coolant Expansion & Storage: When the engine heats up, coolant expands and flows into the reservoir; when the engine cools, contracted coolant is drawn back into the radiator. This prevents pressure buildup or coolant overflow while keeping the system fully filled.
Air Bleeding: The reservoir’s design allows air bubbles (which reduce cooling efficiency) to rise and collect at the top, gradually escaping through the cap or dedicated vents. This maintains a “air-free” cooling system for consistent heat transfer.
Coolant Level Monitoring: The transparent body and marked “MIN/MAX” lines let users easily check coolant levels without opening the radiator cap (safer when the engine is hot), enabling timely refills to prevent overheating.
Compatible Vehicles
This Coolant Reservoir (OE: 31338291) is tailored for the following Volvo models and their respective year ranges:
Model
Applicable Year Range
Volvo XC60 (18–)
2018
Volvo S90 (17–) / S90L
2017–2018
Volvo V90 (17–) / V90 Cross Country
2017–2018
Volvo XC90 (16–)
2016–2018
Notes: The reservoir’s cap is often sold as an integral part (or separate accessory)—confirm if this OE number includes the cap before purchase. For 100% fitment accuracy, verify compatibility with your vehicle’s cooling system pressure rating (e.g., 1.1 bar vs. 1.4 bar) via its VIN (Vehicle Identification Number) or consult Volvo’s official service manual.
Frequently Asked Questions
Q: How to determine if the bumper bracket needs replacement?
A: Signs of a failing bumper bracket include visible damage or deformation, misaligned bumper panels, unusual noises from the front end, or if the bumper appears loose or sagging on one side.
Q: What should be paid attention to when replacing the bumper bracket?
A: For optimal results, we recommend professional installation. Key considerations include ensuring proper alignment of all mounting points, checking for additional damaged components, and verifying all fasteners are properly torqued to specification.
Why Choose Our Products
Extensive Industry Experience: 13 years specializing in Volvo auto parts with precise product matching and technical solutions.
Quality Assurance: 10-stage quality inspection process including durability testing, surface roughness analysis, and dimensional verification.
Manufacturing Excellence: 15,000㎡ production base with 10,000+ SKUs in inventory for fast order fulfillment.
Strategic Partnerships: Collaborations with 50+ factories including suppliers to international brands like Bosch and Hella.
Company Profile
Established in Guangzhou China, Womala Auto parts as a comprehensive company with five branches has engaged in Volvo parts for more than 10 years.There are hundreds of professional staff working in our supply department, sales and logistic support departments.Thanks to the deep coop... Company Profile
Established in Guangzhou China, Womala Auto parts as a comprehensive company with five branches has engaged in Volvo parts for more than 10 years.There are hundreds of professional staff working in our supply department, sales and logistic support departments.Thanks to the deep coop...
