20460931 Six Point Screw | Genuine Volvo Penta Part

🔧 Product Description

OEM fastening component used in the turbocharger, exhaust-manifold and charge-air installation. It restores the specified thread, length, strength and clamping arrangement required by the original Volvo Penta assembly.

🚤 Compatibility

Typically suits:

• Volvo Penta D5A-B TA
• Volvo Penta D5A-T
• Volvo Penta D5A-TA
• Volvo Penta TD420VE
• Volvo Penta D7A-B TA
• Volvo Penta D7A-T
• Volvo Penta D7A-TA
• Volvo Penta D7C-B TA
• Volvo Penta D7C-TA
• Volvo Penta TAD620VE
• Volvo Penta TAD650VE
• Volvo Penta TAD660VE
• Volvo Penta TAD420VE
• Volvo Penta MD2010
• Volvo Penta MD2010B

• Engine Family: D, TD, TAD, MD
• HP Range: Approximately 140 HP
• Year Range: Approximately late 1990s-2000s

⚙️ Key Features

• Six point head
• 0.066 kg
• Supersedes 20523901, catalogued earlier simply as a screw
• For the turbocharger, exhaust-manifold and charge-air installation
• Listed for 15 applications across D, TD, TAD and MD series engines

🔌 Function

Clamps the turbocharger, exhaust manifold or charge-air joint together, holding the flange faces down against gas pressure and heat.

⚠️ Common Signs of Failure

• Exhaust chuffing or hissing from the flange as clamping load is lost
• Sooty black streaking at the joint
• Screw found seized, wasted or snapped on removal
• Head corroded or rounded so a socket no longer grips
• Thread found stretched or the shank found necked down

🛠️ Service Notes

• Hot exhaust fasteners rarely come out sound - order spares before starting the job and renew rather than reuse
• The number replaces 20523901, so the same screw appears under the older number on earlier parts lists

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20460931 → Supersedes 20523901

OEM / Related Numbers

• 20523901 earlier number superseded by this part
• 20460947 manifold
• 20460949 charge-air pipe

📦 Condition

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