3840809 Stud | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta stud for D1-13A and D1-13B engines, weighing 4.5 grams and listed for 6 applications on D series engines. It supersedes part number 861819. No system group is published against it, so the engine designation is the ordering detail.

🚤 Compatibility

Typically suits:

• Volvo Penta D1-13
• Volvo Penta D1-13B
• Volvo Penta D1-13F
• Volvo Penta D1-20
• Volvo Penta D1-20B
• Volvo Penta D1-20F

• Engine Family: D
• HP Range: 13-20 HP

⚙️ Key Features

• For D1-13A and D1-13B
• 4.5 grams
• 6 applications on D series engines
• Supersedes 861819
• 2 used per assembly

🔌 Function

Provides a fixed threaded post for a component to be mounted on and nutted down.

⚠️ Common Signs of Failure

• Stud pulled, stretched or snapped
• Thread damaged, galled or corroded
• Stud turning in its tapped hole instead of holding
• Component loose on the stud, with the joint weeping
• Nut seized so hard the stud comes out with it

🛠️ Service Notes

• Confirm the engine is a D1-13A or D1-13B before ordering
• Fit the stud to the specified depth and let it set before nutting the component down
• Clean and check the tapped hole - a stripped hole will not hold a new stud

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3840809 → Supersedes 861819

OEM / Related Numbers

• 861819 earlier number superseded by this part

📦 Condition

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