977581 Stud | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta stud weighing 0.025 kg and listed for 29 applications across TAD, D and TWD engines. No thread size or length is published against this number, so order it by part number rather than by matching a stud out of the stores.

🚤 Compatibility

• Engine Family: TAD, D, TWD
• HP Range: 140-220 HP

Full model list at the end of this description.

⚙️ Key Features

• Fits 29 applications across TAD, D and TWD engines
• 0.025 kg
• No published thread or length — order by part number
• Quantity varies by assembly, most commonly two

🔌 Function

Gives a permanent threaded anchor in a casting so a component can be clamped down with a nut instead of a bolt, keeping the tapped hole out of the wear cycle.

⚠️ Common Signs of Failure

• Nut will not pull up tight, or works loose in service
• Thread stripped, or the crests rounded off
• Stud backs out of the casting when the nut is undone
• Corrosion or seizure where the stud enters the casting
• Stud snapped off, leaving the stub in the block

🛠️ Service Notes

• Check the tapped hole in the casting before fitting — a stud is only as good as the thread it screws into
• If several studs on the same joint are corroded, renew the set rather than the one that broke

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H
• Volvo Penta TAD840GE, TAD840-43VE, TAD840GE-B
• Volvo Penta TAD570-72VE, TAD570-71VE-B
• Volvo Penta TAD540-42VE
• Volvo Penta TAD550-51VE
• Volvo Penta TAD552VE
• Volvo Penta TAD841-43GE
• Volvo Penta TAD850-52VE
• Volvo Penta TAD851-53GE
• Volvo Penta TAD853VE
• Volvo Penta TAD870-73VE
• Volvo Penta TWD1643GE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1672-1673GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1683GE-B