3860431 Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta screw, part number 3860431, listed in the Marine Propulsion group. It clamps a joint together on the engine or drive, holding the assembly in position and carrying the load across the joint face. Volvo Penta publishes no fitment, dimensions or assembly detail against this number, so check it against the parts list for your own engine before ordering.

⚙️ Key Features

• Genuine Volvo Penta screw
• Marine Propulsion group
• Fastener — tighten to the figure in the manual for your engine
• No fitment or dimensions published against this number — check it against the parts list for your engine

🔌 Function

Clamps a joint together on the engine or drive, holding the assembly in position and carrying the load across the joint face.

⚠️ Common Signs of Failure

• A screw found slack, backed out or missing from its mounting
• Corroded or seized screws, or heads rounded off and refusing to release cleanly
• A stripped or pulled thread, or a screw that turns on without ever coming up to torque
• Leakage or movement at a joint traced to a fastener that has lost its clamping load

🛠️ Service Notes

• Clean the threads in the casting and check them for damage before fitting; a screw run into a dirty or pulled thread gives a false torque reading and will not hold its load
• Tighten to the torque given in the workshop manual for your engine rather than by feel, and follow the specified sequence where the joint has one
• Use the thread locking or sealing compound the manual calls for at that joint — some screws pass into oil, coolant or fuel space and have to seal as well as clamp
• Renew any screw that is stretched, corroded in the shank, or has damaged threads or a rounded head, and never reuse one that was tightened by a stretch or angle-tighten procedure
• A little marine-grade anti-seize helps later removal where the manual permits it, but keep it off threads that are meant to take a locking compound

📦 Condition

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