20459941 Plug | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta plug used in the engine fluid passage or service-port closure. It is supplied as an individual service component under part number 20459941 and is intended to restore the original fit, sealing, alignment, retention or operating function of the specified assembly. This listing supplies the named part only; adjoining components shown in the engine arrangement are serviced separately unless explicitly stated.

🚤 Compatibility

Typically suits:

• Volvo Penta TD420VE
• Volvo Penta TAD560VE
• Volvo Penta TAD561VE
• Volvo Penta TAD620VE
• Volvo Penta TAD650VE
• Volvo Penta TAD660VE
• Volvo Penta TAD734GE
• Volvo Penta TAD420VE
• Volvo Penta TAD752GE
• Volvo Penta TAD753GE
• Volvo Penta TAD754GE
• Volvo Penta TAD765VE
• Volvo Penta TAD764VE
• Volvo Penta TAD763VE
• Volvo Penta TAD762VE
• Volvo Penta TAD761VE

• Engine Family: TD, TAD

⚙️ Key Features

• Plug closing an engine service port or passage
• 0.016 kg
• Listed for 16 fitments across the TD and TAD series

🔌 Function

Closes the designated service port or engine passage and maintains system sealing.

⚠️ Common Signs of Failure

• Fluid or pressure leakage develops around the plug
• Threads are stripped, crossed or corroded
• The plug is seized or cannot be removed for service
• The sealing face or related gasket is damaged
• The plug repeatedly loosens under vibration

🛠️ 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