946673 Flange Lock Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta flange lock nut, listed as an alternative, weighing 0.041 kg and covering 16 applications across the D, TWD, TAD, TAMD and MD series. It supersedes 963110, which was catalogued earlier simply as a lock nut, so the current part is listed with an integral flange where the old number was not.

🚤 Compatibility

Typically suits:

• Volvo Penta D12D-A MG
• Volvo Penta D12D-E MG
• Volvo Penta TWD1630P
• Volvo Penta TWD1630V
• Volvo Penta D5A-B TA
• Volvo Penta D5A-T
• Volvo Penta D5A-TA
• Volvo Penta D7A-B TA
• Volvo Penta D7A-T
• Volvo Penta D7A-TA
• Volvo Penta D9A2A
• Volvo Penta TAD1630P
• Volvo Penta TAMD163A-A
• Volvo Penta TAMD165A
• Volvo Penta MD2010
• Volvo Penta MD2010B

• Engine Family: D, TWD, TAD, TAMD, MD

⚙️ Key Features

• Listed as an alternative
• 0.041 kg
• Supersedes 963110, catalogued earlier as a plain lock nut
• 16 applications across D, TWD, TAD, TAMD and MD series engines
• Quantity varies by assembly, most commonly four

🔌 Function

Locks a joint against vibration and spreads the clamp load through its integral flange.

⚠️ Common Signs of Failure

• Nut found loose and the joint moving
• Flange face bedded, dished or scored
• Locking action gone — the nut turns freely by hand
• Thread galled or seized on removal

🛠️ Service Notes

• Do not add a separate washer under the flange — the flange is the bearing face
• Renew rather than reuse once the locking feature has gone slack

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 946673 → Supersedes 963110

OEM / Related Numbers

• 963110 earlier number superseded by this part

📦 Condition

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