Womala Sunroof Drain Hose Drain Valve OE 30753148 for C30 S40 V50 S60 V60 S80 V70 XC70 XC60 XC90

Product Details: Sunroof Drain Hose Drain Valve - 30753148

This genuine-equivalent sunroof drain valve is a precision-engineered component designed to channel water from the sunroof drainage system through the vehicle body. Commonly referred to as a "pass-through" or "tulip" valve, it serves as the terminal endpoint of the front sunroof drain hoses, directing water safely away from the vehicle's interior and into the wheel well area .

Core Function: The drain valve attaches to the end of the sunroof drain hose and passes through the vehicle's firewall or A-pillar structure, allowing accumulated water from the sunroof catch pan to exit outside the vehicle. Its design includes a narrow, cross-shaped or "+" shaped outlet that helps prevent insects and debris from entering the drain system while allowing water to flow freely. A properly functioning valve is critical to preventing water ingress that can saturate carpets, damage electronic modules, and cause interior flooding .

Technical Specifications:

• Part Number: 30753148

• Part Name: Sunroof Drain Hose Drain Valve / Pass-Through / Outlet Hose

• Position: Front (left and right sides)

• Material: Durable rubber construction

• Type: Terminal drain valve with cross-shaped outlet

• System: Sunroof / Moonroof Drainage System

Compatible Vehicle Models

Replacement Part Numbers

Failure Symptoms:

• Water leakage into vehicle cabin, particularly on floorboards 

• Damp carpets or pooling water under seats

• Foggy windows or musty interior odor

• Visible deterioration, cracking, or missing drain valve under A-pillar area

• Water draining inside firewall instead of exiting through wheel well

Installation Notes:

The front sunroof drain valves are located at the bottom of the A-pillars, accessible by removing the A-pillar trim . The drain hose connects to this valve, which then passes through the firewall or body panel . Due to limited access behind the dashboard, replacement can be challenging on certain models . When replacing a deteriorated valve, it is recommended to inspect the drain hose for clogs or damage and clear any debris using compressed air or a flexible snake tool .

Note: This drain valve is a known wear item on sunroofs. Over time, the rubber material can harden, crack, or detach, leading to water ingress . It is recommended to replace both front valves (left and right) simultaneously to ensure balanced drainage. Verify compatibility using your vehicle's VIN number before purchasing. Professional installation is recommended, as accessing the valves may require removal of interior trim and careful handling of side curtain airbag components .

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.

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.