997823 Washer | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta washer weighing 0.003 kg and listed for 30 applications across the TD and TAD engine series. It supersedes part number 20450745.

⚙️ Key Features

• 0.003 kg
• 30 applications across the TD and TAD series
• Supersedes 20450745

🔌 Function

Spreads the clamp load of the fastener over the component face, protecting the surface and stopping the head from biting in.

⚠️ Common Signs of Failure

• Joint losing tension or working loose
• Washer dished, cupped or bitten into by the fastener head
• Corrosion or pitting on either face
• Bore worn oval where the fastener passes through

🛠️ 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 Supersession Chain

• 997823 → Supersedes 20450745 → Supersedes 20502510

OEM / Related Numbers

• 20450745 earlier number superseded by this part
• 20502510 earlier number superseded by this part

📦 Condition

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