20405715 Six Point Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 150 mm six-point screw used in SAE 1, SAE 2 and SAE 3 flywheel-housing installations. Quantity varies from one to four according to housing type.

🚤 Compatibility

• Engine Family: AQD, D, TD, TAD, MD

Full model list at the end of this description.

⚙️ Key Features

• Six-point flywheel-housing screw
• Specified length 150 mm
• One to four used according to SAE housing configuration
• Provides the specified deep clamp load
• Must be installed in the correct length-coded position
• Engine type: Volvo Penta 5- and 7-litre industrial diesel
• L=140mm / L=150mm (Volvo assembly listing)
• Quantity varies by assembly, most commonly one

🔌 Function

Clamps the flywheel housing to the cylinder block at the specified 150 mm screw positions.

⚠️ Common Signs of Failure

• Loose flywheel housing
• Damaged or stretched screw
• Incorrect fastener length
• Housing fretting or cracking
• Driveline misalignment

🛠️ Service Notes

• Check the head, threads and seating face before reuse; a screw with rounded flats, a stretched thread or heavy corrosion should be renewed, not refitted
• Clean the threads and the mating face so the screw pulls down onto metal rather than onto dirt or old sealant
• Use a correctly sized spanner or socket fully engaged on the head, and support the component so the screw is not loaded sideways as it tightens
• Refit the same washers, locking devices or sealing compound that were originally used
• Tighten to the figure and sequence given in the workshop manual for your engine, pulling the screws of a multi-screw joint down evenly in stages

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20405715 - current 150 mm flywheel-housing screw

OEM / Related Numbers

• 20744652 - related SAE 3 housings
• 21018780 - related SAE 3 housings
• 20529905 - related SAE 2 housing
• 20405713 - 85 mm screw
• 20405714 - 160 mm screw

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D7A-B TA, D7A-T, D7A-TA, D7C-B TA, D7C-TA
• Volvo Penta D5A-B TA, D5A-T, D5A-TA
• Volvo Penta MD2010, MD2010B
• Volvo Penta TAD520GE, TAD520VE
• Volvo Penta TAD530GE MECH, TAD530GE EDC4
• Volvo Penta TAD531GE MECH, TAD531GE EDC4
• Volvo Penta TAD720GE, TAD720VE
• Volvo Penta TAD721GE, TAD721VE
• Volvo Penta TAD722GE, TAD722VE
• Volvo Penta TAD730GE MECH, TAD730GE EDC4
• Volvo Penta TAD731GE MECH, TAD731GE EDC4
• Volvo Penta TD520GE, TD520VE
• Volvo Penta TD720GE, TD720VE PP
• Volvo Penta AQD70B
• Volvo Penta TAD532GE EDC4
• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4
• Volvo Penta TAD750VE
• Volvo Penta TAD760VE