1543923 Washer | Genuine Volvo Penta Part

🔧 Product Description

This is a genuine Volvo Penta washer from the cooling system group, supplied in the 75 mm length (L=75mm) specification that distinguishes it from other washers sharing the same name. It seats against a cooling system fastener or joint to spread load and maintain a stable, leak-free clamped connection. It fits the TAMD162, TAMD163, TAMD165, TAD1630/1631, TWD1620/1630 and TID162 series engines.

🚤 Compatibility

• Engine Family: TWD, TID, TD, TAMD, TAD
• HP Range: Approximately 468-770 HP
• Year Range: Approximately 1987-2005

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta OEM part number 1543923
• Dimension: L=75mm
• System group: Cooling System
• Net weight approximately 0.059 kg
• Fits TWD1620/1630, TID162, TD164, TAMD162, TAMD163, TAMD165 and TAD1630/1631 series engines
• Engine type: 16.1L inline-six turbocharged/aftercooled diesel

🔌 Function

The washer distributes fastener load across the mating surface and helps maintain correct clamping force at a cooling system connection. Correct washer length and thickness are needed to keep the joint tight and prevent coolant leakage.

⚠️ Common Signs of Failure

• Coolant seepage or weeping at the joint the washer seats against
• Corrosion, pitting or scaling of the washer face
• Flattening, deformation or cracking from over-torquing or age
• Loss of clamping force allowing the fastener to loosen in service
• Visible gap or misalignment between the washer and its mating surface

🛠️ 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

• 1543891 coolant-pump hub
• 1556330 coolant circulation pump
• 8149980 complete coolant pump
• 1543908 sealing ring
• 276636 circulation-pump overhaul kit

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
• Volvo Penta TAD1630G, TAD1630GE, TAD1630P
• Volvo Penta TAMD165A, TAMD165C, TAMD165P
• Volvo Penta TWD1630G, TWD1630P, TWD1630V
• Volvo Penta TAD1631GE, TAD1631G
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta TD164KAE
• Volvo Penta TWD1620G