20555090 Hexagon Nut | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta hexagon nut is an OEM service component used in the Engine / Auxiliary Hexagon Nut. It is manufactured to the original Volvo Penta dimensional, material and interface requirements for the documented Volvo Penta engine assemblies application. Technical identification: Hexagon nut securing the specified bracket, pipe or engine component. In service, it provides the specified clamp load and mechanical retention for the associated assembly. Selection must be confirmed by OEM part number 20555090, the exact model/product number, serial number and installed assembly configuration.

⚙️ Key Features

• Genuine Volvo Penta OEM hexagon nut
• OEM part number 20555090
• Technical distinction: Hexagon nut securing the specified bracket, pipe or engine component

🔌 Function

Clamps its joint on the engine or auxiliary assembly, holding the bracket, pipe or component at its designed load.

⚠️ Common Signs of Failure

• Component working loose or rattling on its mounting
• Nut backed off along its thread
• Fretting at the joint face
• Galled or stripped thread found on removal

🛠️ Service Notes

• Check the stud or bolt thread is clean and undamaged and run the nut down by hand first; grit on the thread gives a false torque reading
• Tighten to the torque in the workshop manual for your engine, following the specified sequence on multi-fastener joints and working round in stages so the load comes up evenly
• Renew self-locking and all-metal locking nuts rather than reusing them — once the locking feature has been through a cycle it no longer holds reliably
• Fit the washer, tab or locking arrangement that belongs with that joint; a locking device that was bent or crimped in service should be replaced, not straightened and reused
• Marine-grade anti-seize on stainless threads reduces galling and makes later removal possible, but keep it off threads that must take a locking compound

📦 Condition

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