Core Functions

• Leak Prevention: The primary function of this O ring is to create a tight seal at the hose connections. In the coolant system, it prevents coolant leakage, which could lead to engine overheating. In the oil system, it stops oil from leaking out, avoiding lubrication issues. And in vacuum systems, it maintains the necessary vacuum pressure for components like the brake booster or HVAC controls to function properly.
• System Integrity Maintenance: By providing an effective seal, it helps maintain the integrity of the relevant vehicle systems. For example, in the cooling system, it ensures that the coolant can circulate efficiently to cool the engine, and in the vacuum system, it keeps the vacuum - operated components working as intended.
• Durability: The O ring is designed to be durable, with the ability to resist wear and tear caused by the movement of hoses and the pressure of fluids. This ensures long - term reliable performance, reducing the frequency of replacements and potential system failures.

Compatible Vehicles

This Upper Hose O Ring (OE: 31370994) is tailored for the following Volvo models and their respective year ranges:

Notes: O rings are application - specific components. Even for the same Volvo model, the O ring may differ in size, shape, or material based on the specific system or component it is used for. For 100% fitment accuracy, confirm the exact component and system this O ring is for, and verify compatibility via your vehicle’s VIN (Vehicle Identification Number) or consult Volvo’s official service manual.

• 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.