1543657 Washer | Genuine Volvo Penta Part

🔧 Product Description

This is a genuine Volvo Penta washer from the Engine system group, part number 1543657. It is used as a load-spreading and locking element under a bolt or nut head at engine assembly points, helping maintain correct clamping force and protecting the mating surface. It is specified for the 16-litre TAMD, TAD, TWD, TID and TD engine families.

🚤 Compatibility

• Engine Family: TWD, TID, TD, TAMD, TAD

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1543657
• System group: Engine
• Net weight: 0.043 kg
• Fits TWD1620G/1630, TID162, TD164, TAMD162, TAMD163, TAMD165 and TAD1630/1631 series engines
• Supplied as a single washer
• Engine type: Volvo Penta heavy-duty inline-six diesel engine
• 6 used per assembly

🔌 Function

A washer distributes the clamping load of a bolt or nut over a wider area and protects the component surface from scoring as the fastener is tightened. It also helps the joint retain correct torque and sealing pressure in service.

⚠️ Common Signs of Failure

• Visible distortion, dishing or cracking of the washer
• Corrosion or pitting that prevents proper seating
• Fastener loosening or loss of torque at the joint
• Scoring or gouging of the surface beneath the washer
• Leakage at the joint where the washer forms part of the seating 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

• 1543654 - Valve-cover cap nut
• 943819 - Disc spring; two used at each cover
• 1543582 - Valve-cover damping ring
• 1543581 - Valve-cover gasket
• 1543469 - Valve cover

📦 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 TWD1630G, TWD1630P, TWD1630V
• Volvo Penta TAD1631GE, TAD1631G
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta TAMD165A, TAMD165C
• Volvo Penta TD164KAE
• Volvo Penta TWD1620G