983789 Lock Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lock nut weighing 0.009 kg and listed for 7 applications across TSK series units. It supersedes 947363, which was catalogued earlier as a plain hexagon nut, so the replacement carries a locking feature that the original number did not describe.

🚤 Compatibility

Typically suits:

• Volvo Penta TSK XXP-A
• Volvo Penta TSK XXP-ALT
• Volvo Penta TSK XXP-D3
• Volvo Penta TSK X-B
• Volvo Penta TSK X-BLT
• Volvo Penta TSK XHP-B
• Volvo Penta TSK XHP-BLT

• Engine Family: TSK

⚙️ Key Features

• 0.009 kg
• Supersedes 947363
• The superseded number was catalogued earlier as a plain hexagon nut
• Listed for 7 applications across TSK series units

🔌 Function

Locks onto a stud or bolt and resists loosening under vibration, holding clamp load without a separate locking device.

⚠️ Common Signs of Failure

• Nut backing off under vibration despite being tightened
• Locking feature spinning freely by hand, showing it is spent
• Thread stripped or pulled on removal
• Corrosion seizing the nut onto the stud

🛠️ Service Notes

• Fit a new lock nut rather than reusing one, since the locking feature is spent once it has been run down a thread
• An older list quoting 947363 as a hexagon nut should be read as this lock nut

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 983789 → Supersedes 947363

OEM / Related Numbers

• 947363 earlier number superseded by this part

📦 Condition

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