20580526 Washer | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta washer used in the engine fastener load-distribution or spacing position. It is supplied as an individual service component under part number 20580526 and is intended to restore the original fit, sealing, alignment, retention or operating function of the specified assembly. This listing supplies the named component only; adjoining parts are serviced separately.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD650VE
• Volvo Penta TAD660VE
• Volvo Penta TAD720VE
• Volvo Penta TAD721VE
• Volvo Penta TAD722VE
• Volvo Penta TAD750VE
• Volvo Penta TAD520VE
• Volvo Penta TAD760VE

• Engine Family: TAD

⚙️ Key Features

• 0.095 kg
• Listed for 8 applications on TAD series engines
• Cooling system washer
• Quantity varies by assembly, most commonly four

🔌 Function

Distributes clamping load and protects the mating surface.

⚠️ Common Signs of Failure

• Fastener losing clamp load and needing repeated retightening
• Washer dished, cupped or cracked around its bore
• Bearing face fretted or bitten into the mounting surface
• Corrosion trapped between the washer and the mounting face

🛠️ Service Notes

• Check you are fitting the same type of washer that came out — plain, hardened, sealing and locking washers are not interchangeable, and the wrong one either fails to seal or fails to hold
• Treat sealing washers on fuel, oil and coolant unions as single-use; they seal by deforming onto the faces, so a used one will not seal reliably a second time
• Clean the seating faces and make sure the washer sits flat and square, fully under the head or nut, before tightening — a washer trapped on a chamfer or edge will crush unevenly
• Tighten the fastener to the figure given in the workshop manual for your engine, and account for every washer on reassembly so none is left loose inside a housing or the engine bay

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20580495 - Related Cable Terminal
• 20580547 - Related Sealing Ring
• 20580494 - Related Cable Terminal
• 20580550 - Related Cover
• 20580491 - Related Housing
• 20580716 - Related Shoulder Screw

📦 Condition

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