1543508 Lock Plug | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lock plug (part number 1543508), an Engine group sealing component used to close and secure an internal passage or threaded opening in the engine assembly. It is fitted across the TWD, TID, TAD and TAMD 162, 163, 164, 165 and 1630 series diesel engines. Supplied as a single plug with a net weight of approximately 0.011 kg.

🚤 Compatibility

• Engine Family: TWD, TID, TD, TAMD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta OEM part number 1543508
• System group: Engine
• Fits TWD, TID, TAD and TAMD 162, 163, 164, 165 and 1630 series diesel engines
• Net weight approximately 0.011 kg (11 g)
• Sold as an individual plug
• Engine type: Volvo Penta heavy-duty inline-six diesel engine
• 12 used per assembly

🔌 Function

The lock plug seals and locks off an internal engine passage or threaded port so that pressure and fluid are retained within the intended circuit. It prevents leakage and stops the sealed passage from loosening in service.

⚠️ Common Signs of Failure

• Oil, coolant or fuel seepage around the plug seat
• Plug working loose or backing out due to vibration
• Damaged, rounded or stripped drive recess preventing correct torquing
• Corrosion or thread damage that prevents a reliable seal
• Loss of pressure in the sealed circuit traced to the plug

🛠️ Service Notes

• Twelve of these plugs are used per assembly, so confirm how many the position you're working on needs before ordering just one
• Being a small 11 g gallery plug, corrosion at the seat is what usually seizes it in - inspect the seat and thread carefully rather than forcing it, since a seized plug typically damages the housing on removal

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 955077 - Related cylinder-head plug
• 3964715 - Related cylinder-head plug
• 1543492 - Cylinder-head locating pin
• 1543476 - Rocker-shaft bearing bracket
• 1543443 - Rocker-arm bushing

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
• Volvo Penta TAD1630G, TAD1630GE, TAD1630P
• Volvo Penta TWD1630G, TWD1630P, TWD1630V
• Volvo Penta TAD1631GE, TAD1631G
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta TAMD165A, TAMD165C
• Volvo Penta TD164KAE
• Volvo Penta TWD1620G