21289128 Screw | Genuine Volvo Penta Part

🔧 Product Description

A separately specified retaining screw used in the sensor and bracket installation containing parts 21289125 and 21289126.

🚤 Compatibility

Typically suits:

• Volvo Penta 3.0GXiC-J
• Volvo Penta 3.0GXi-J

⚙️ Key Features

• Correct factory thread and length
• Not interchangeable with 21289127 without parts-parts list for your engine confirmation
• Maintains secure sensor-bracket attachment
• Engine type: Volvo Penta marine or industrial application

🔌 Function

Secures the sensor bracket or sensor body in the designated mounting position.

⚠️ Common Signs of Failure

• Loose sensor bracket
• Corrosion or seized screw
• Incorrect screw length contacting an adjoining component
• Broken fastener during servicing

🛠️ 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

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21289125 - sensor
• 21289126 - bracket
• 21289127 - separate retaining screw

📦 Condition

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