21345611 Plug | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta threaded or press-fit plug used to close a machined service opening, gallery or unused port in a specified engine assembly. Correct thread or diameter, sealing method and material are essential because a visually similar plug can have a different pressure rating or insertion depth.

⚙️ Key Features

• Genuine Volvo Penta engine plug
• Position-specific thread or interference fit
• Closes an oil, coolant, air or service opening
• Requires the specified sealant, washer or installation depth
• Match exact engine schematic and serial number
• Engine type: Volvo Penta marine or industrial diesel engine

🔌 Function

Seals the assigned machined opening so oil, coolant, air or combustion gas remains within the intended passage.

⚠️ Common Signs of Failure

• Oil or fluid leakage at the sealing lip
• Hardening, cracking or lip damage
• Grooving or corrosion on the mating shaft surface
• Seal displacement or incorrect installation depth
• Contamination or repeated leakage after replacement

🛠️ 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

• 21345611 → Supersedes 21087703

OEM / Related Numbers

• 21087703 earlier number superseded by this part
• 20513933 - related Volvo Penta plug reference used in another assembly; not automatically interchangeable

📦 Condition

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