21330056 Plug | Genuine Volvo Penta Part

🔧 Product Description

A genuine threaded plug used to close the assigned oil, coolant, fuel or machining passage.

🚤 Compatibility

Typically suits:

• Volvo Penta D2-55F
• Volvo Penta D2-50F
• Volvo Penta D2-75F
• Volvo Penta D2-60F

• Engine Family: D
• HP Range: 50-75 HP

⚙️ Key Features

• Precision thread and sealing face
• Correct OEM installation depth
• Designed for the assigned fluid and pressure
• Direct replacement

🔌 Function

The plug closes the designated passage and prevents leakage or contamination entry.

⚠️ Common Signs of Failure

• Rounded drive
• Plug loosening or cracked sealing area

🛠️ 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

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21330056 → Supersedes 21194526

OEM / Related Numbers

• 21194526 earlier number superseded by this part
• 21541019 - Oil pump
• 21188176 - Idler gear
• 21188306 - Shaft
• 3580570 - Oil-pump rotor
• 21188141 - Cover
• 3583551 - Oil sump

📦 Condition

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