1542197 Spherical Washer | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta spherical washer (part number 1542197), a fuel system component used on the MD, TMD, TAMD, TD, AQD and AQAD 30- and 40-series marine diesel engines. Its curved seating face allows a fastener to sit square against a joint even where there is slight angular misalignment, helping maintain even clamping load on fuel system connections. Supplied as a single washer.

🚤 Compatibility

Typically suits:

• Volvo Penta MD40A
• Volvo Penta TMD40A
• Volvo Penta TMD40B
• Volvo Penta TMD40C
• Volvo Penta AQAD40B
• Volvo Penta AQAD30A
• Volvo Penta MD30A
• Volvo Penta TAMD30A
• Volvo Penta TD30A
• Volvo Penta TMD30A
• Volvo Penta AQAD40A
• Volvo Penta AQD40A
• Volvo Penta TD40A
• Volvo Penta TAMD40A
• Volvo Penta TAMD40B

• Engine Family: MD, TMD, AQAD, TAMD, TD, AQD
• HP Range: Approximately 100-165 HP
• Year Range: Approximately 1970s - 1980s

⚙️ Key Features

• OEM Volvo Penta part number 1542197
• System group: Fuel System
• Net weight approximately 0.0023 kg
• Spherical (self-aligning) seating face for angular misalignment
• Fits Volvo Penta 30- and 40-series marine diesel engines including MD, TMD, TAMD, TD, AQD and AQAD variants
• Supplied as an individual washer
• Engine type: Volvo Penta inline 6-cylinder mechanically injected marine diesel
• Quantity varies by assembly, most commonly six

🔌 Function

The spherical washer sits between a fastener and its mating surface, using its curved profile to self-align and distribute clamping force evenly even when the joint is not perfectly square. This helps keep fuel system connections correctly seated and leak-free under vibration and thermal movement.

⚠️ Common Signs of Failure

• Fuel weeping or seepage at the joint the washer seats against
• Visible flattening, cracking or deformation of the curved seating face
• Corrosion, pitting or scale build-up on the washer surfaces
• Fasteners losing torque or working loose in service
• Scoring or galling on the mating surface indicating the washer is no longer self-aligning correctly

🛠️ Service Notes

• Its curved face is what lets it self-align, so fit it the correct way round — seated backwards it loses the self-aligning action and behaves like a flat washer under a joint that is already slightly out of square.
• With around six used per engine on the fuel system, check the full count needed for your engine's injector and fuel-line joints before starting, rather than assuming one washer per fastener you can see.

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 1542167 related injector leak-off pipe
• 1542155 related injector assemblies
• 3803239 related injector assemblies

📦 Condition

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