20726931 Plug | Genuine Volvo Penta Part

🔧 Product Description

Threaded closure plug used in a heavy-duty Volvo Penta inlet or charge-air manifold. It closes an unused drilling, sensor port or service opening while maintaining boost-pressure sealing.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD943VE
• Volvo Penta TAD952VE
• Volvo Penta TAD951VE
• Volvo Penta TAD950VE
• Volvo Penta TAD1170-72VE
• Volvo Penta TAD940GE
• Volvo Penta TAD940VE
• Volvo Penta TAD941VE
• Volvo Penta TAD941GE
• Volvo Penta TAD942VE
• Volvo Penta TAD1150-52VE
• Volvo Penta TAD1140-42VE

• Engine Family: TAD
• HP Range: Approximately 750 HP
• Year Range: Approximately 2000s-2010s

⚙️ Key Features

• OEM thread and sealing-face specification
• Suitable for pressurised intake or charge-air service
• Maintains the internal airflow path without protruding incorrectly into the passage
• Designed for engine vibration and intake-air temperature
• Requires the specified sealing compound or sealing washer where catalogued
• Engine type: 16.1 L six-cylinder turbocharged/aftercooled industrial diesel

🔌 Function

Closes and seals the designated manifold port so compressed intake air cannot escape and contamination cannot enter.

⚠️ Common Signs of Failure

• Boost leakage, hissing or oil-mist staining around the plug
• Damaged threads or rounded drive surfaces
• Plug loosening under vibration
• Cracking or corrosion of the plug body
• Reduced boost pressure or power from an unsealed opening

🛠️ Service Notes

• Clean the threads and the seating face before fitting, and make sure the opening itself is clear of old sealant, swarf and corrosion
• Renew the sealing washer or O-ring where one is fitted rather than reusing a flattened one, and only use thread sealant where the workshop manual for your engine calls for it
• Tighten to the figure given in the workshop manual for your engine — plugs in aluminium and other soft castings strip easily, and a plug pulled up hard to cure a leak usually distorts the seat and makes it worse
• Where the plug closes an oil, fuel or coolant passage, run the engine up to temperature afterwards and check the joint under pressure before signing the job off
• Keep removed plugs paired with the holes they came out of during a strip-down — plugs of very similar appearance often differ in thread, reach or sealing type

📦 Condition

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