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Auto Spare Parts Pressure Hose OE 30780345 Air Conditioning Duct for Volvo
The Pressure Hose (Air Conditioning Duct) (OE Number: 30780345) is a critical fluid-carrying component for Volvo’s air conditioning (AC) system, designed to fit sedan, estate, hatchback, and convertible models. Installed in the AC loop—typically between the AC compressor (high-pressure side) and the condenser or evaporator—it transports high-pressure, refrigerant (e.g., R134a) to enable heat exchange, which is essential for the AC system to produce cool air. Its core role is to maintain sealed, efficient refrigerant flow under high pressure, directly impacting the AC’s cooling performance.
This OE-grade pressure hose features a high-pressure, corrosion-resistant construction:
Material: Multi-layered composite structure optimized for AC refrigerant systems:
Inner layer: Nitrile rubber (NBR) or chlorinated polyethylene (CPE)—chemically resistant to AC refrigerants and lubricants, ensuring no leakage or degradation over time.
Reinforcement layer: Braided high-tensile steel or synthetic fiber—withstands AC system pressure (up to 300 PSI, matching factory specs) to prevent expansion, kinking, or bursting.
Outer layer: Heat-resistant EPDM rubber—shields the inner layers from engine bay heat (up to 120°C), road debris, and UV damage, extending the hose’s service life.
Precision Design: Molded to exact OE dimensions, with pre-formed bends and standardized end fittings (e.g., crimped metal couplings with O-rings) that align seamlessly with AC system ports. Unlike generic hoses, it eliminates misalignment (which causes refrigerant leaks) or flow restrictions (which reduce cooling efficiency), and fits tightly in under-hood spaces without interfering with other components.
Core Functions
Transport High-Pressure Refrigerant: Acts as a sealed channel for high-pressure refrigerant between AC system components (e.g., compressor to condenser), enabling the heat exchange process that cools cabin air. Without proper refrigerant flow, the AC system cannot produce cold air.
Withstand System Pressure & Environment: The reinforcement layer resists high AC system pressure, while the outer layer protects against engine heat, debris, and corrosion—preventing hose failure (e.g., bursting, leaking) that would disable the AC and require costly refrigerant recharge.
Maintain AC Efficiency: The leak-tight inner layer and smooth inner surface ensure no refrigerant loss (a common cause of weak cooling) and consistent flow rate, keeping the AC system operating at factory cooling capacity.
Compatible Vehicles
Applicable Models
Applicable Years
S40 (04-)
2004–2012
V50
2004–2012
C30
2007–2013
C70 (06-)
2006–2013
*For 100% fitment accuracy:
Confirm the vehicle’s AC system type via VIN (e.g., R134a refrigerant system)—this hose is calibrated for specific refrigerant and pressure requirements, and is not compatible with older R12 systems.
Reference the vehicle’s official service manual to verify the hose’s exact position in the AC loop (e.g., high-pressure side vs. low-pressure side)—installing it on the wrong side will cause system failure.
After installation, perform an AC system pressure test and refrigerant recharge (per factory specs) to ensure no leaks and optimal cooling performance.*
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...
