20405714 Six Point Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 160 mm six-point screw used at defined positions in SAE 1, SAE 2 and SAE 3 flywheel-housing assemblies.

🚤 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 160 mm
• Quantity varies by SAE housing type
• Maintains housing alignment and clamp load
• Must not be exchanged with 85 mm or 150 mm screws
• Engine type: Volvo Penta 5- and 7-litre industrial diesel
• L=160mm (Volvo assembly listing)

🔌 Function

Secures the flywheel housing to the engine block at the assigned deep fastener position.

⚠️ Common Signs of Failure

• Housing movement or misalignment
• Wrong screw length fitted
• Oil leakage at the housing joint
• Abnormal driveline vibration

🛠️ 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

• 20405714 → Supersedes 20501343

OEM / Related Numbers

• 20501343 earlier number superseded by this part
• 20744652 - related SAE 3 housings
• 21018780 - related SAE 3 housings
• 20529905 - related SAE 2 housing
• 20405713 - 85 mm screw
• 20405715 - 150 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 AQD70B
• Volvo Penta TAD532GE EDC4
• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4
• Volvo Penta TAD750VE
• Volvo Penta TAD760VE
• Volvo Penta TD520GE
• Volvo Penta TD720GE