21913841 Plug | Genuine Volvo Penta Part

🔧 Product Description

Threaded sealing plug used in the IPS-A hydraulic valve and oil circuit. It closes the specified gallery while working with the assigned O-ring and must be installed cleanly at the correct torque.

🚤 Compatibility

• Engine Family: D, IPS
• HP Range: 260-435 HP

Full model list at the end of this description.

⚙️ Key Features

• Factory thread and sealing interface
• Designed for the specified O-ring or seal
• Pressure-tight closure
• Allows service access to gallery/housing
• Exact installation position required

🔌 Function

Seals a drilled hydraulic or lubrication gallery while allowing service access when required.

⚠️ Common Signs of Failure

• Oil leakage at the plug
• Flattened or cut O-ring
• Corrosion seizure
• Contamination entering the hydraulic circuit during service

🛠️ 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

• 21913841 → Supersedes 21412920

OEM / Related Numbers

• 21412920 earlier number superseded by this part
• 949656 - associated O-ring
• 21611508 - adapter
• 3886794 - strainer
• 949659 - O-ring
• 21611515 - cover
• 834337 - oil filter
• 21123875 - sensor references
• 874313 - sensor references

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-330D-E, D6-370D-E, D6-330D-C, D6-370D-C, D6-330D-D, D6-370D-D, D6-330D-F, D6-370D-F, D6-300D-F, D6-310D-D, D6-310D-C, D6-310D-E, D6-435D-D, D6-435D-E, D6-435D-F, D6-435D-C
• Volvo Penta D4-260D-C, D4-260D-D, D4-260D-E, D4-260D-F, D4-300D-C, D4-300D-D, D4-300D-E, D4-300D-F
• Volvo Penta IPS-A, IPS-B, IPS-C, IPS-D, IPS-E, IPS-F
• Volvo Penta 8.1IPSCE-MF, 8.1IPSCE-P, 8.1IPSCE-Q