20902372 Air Vent Pipe | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta air-vent pipe for the specified cooling or fluid circuit. Its small-bore routing carries trapped air or vapour from a high point back to the expansion or collection area, preventing air pockets from interrupting circulation.

⚙️ Key Features

• Genuine Volvo Penta Air Vent / De-Aeration Pipe - part number 20902372
• Small-bore de-aeration passage
• Original routing reaches the system high point
• Correct end connections for the vent circuit
• Continuous rise helps air migrate out of the system
• Resists operating temperature and vibration
• Keep the bore clear of scale, sealant and hose debris
• Engine type: Application-specific Volvo Penta air-intake and exhaust system

🔌 Function

The pipe provides a controlled escape path for air and vapour. Removing trapped gas allows the main circuit to remain filled with liquid, improving pump performance and heat transfer.

⚠️ Common Signs of Failure

• Engine temperature fluctuates from trapped air
• Vent line blocks with scale or debris
• Coolant or fluid leaks at the small connections
• Pipe cracks from vibration
• System is difficult to bleed after service

🛠️ Service Notes

• A vent line must run continuously uphill to its high point with no dips or sags that can trap fluid, or the system will not self-vent
• Check that the bore and any restriction or fitting at each end is completely clear; these lines block with scale and debris, and the symptom is persistent air in the system
• Renew the seals, unions and clips, route the pipe clear of hot and moving parts, and support it so it cannot chafe or fatigue
• Do not kink or sharply bend the pipe, force it into place, or substitute a different length or bore
• Refill, vent and run up, then check the joints for weeping and confirm the system holds pressure

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• VOE20902372

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging