20460039 Diaphragm | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta diaphragm used in the flywheel coupling and torsional-flexibility assembly. It is supplied as an individual service component under part number 20460039 and is intended to restore the original fit, sealing, alignment, retention or operating function of the specified assembly. This listing supplies the named part only; adjoining components shown in the engine arrangement are serviced separately unless explicitly stated.

🚤 Compatibility

Typically suits:

• Volvo Penta TD420VE
• Volvo Penta TAD620VE
• Volvo Penta TAD720VE
• Volvo Penta TAD721VE
• Volvo Penta TAD722VE
• Volvo Penta TAD420VE
• Volvo Penta TAD520VE

• Engine Family: TD, TAD

⚙️ Key Features

• Flywheel coupling diaphragm, 2.0 kg
• Gives the coupling controlled torsional flexibility while carrying engine torque
• Listed for 7 applications across TD and TAD engines

🔌 Function

Provides controlled flexibility in the flywheel coupling while transmitting engine torque.

⚠️ Common Signs of Failure

• Cracks, tears or permanent distortion are visible
• Driveline vibration or coupling noise increases
• The diaphragm no longer transmits torque evenly
• Fastener holes show elongation, fretting or fatigue damage
• Replacement is required after driveline misalignment or overload

🛠️ Service Notes

• Check driveline alignment before fitting a replacement - a diaphragm that has cracked once will crack again if the misalignment stays
• Inspect the fastener holes in the flywheel and coupling flange for elongation at the same time

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20460038 - Matching flywheel flange
• 20460194 - Related flywheel
• 21033328 - Related starter ring
• 20460088 - Related retaining screw

📦 Condition

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