3825513 Sleeve Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 1/2 inch union nut, from the Fuel System group and weighing 0.036 kg. It belongs to the 1/2 inch set alongside the connector 3825512 and the adapter 3825511. The catalogue notes that the 1/2 inch copper pipe is not stocked by Volvo Penta, so the pipe for this size is sourced separately while the fittings are catalogued.

⚙️ Key Features

• union nut 1/2 inch
• Part of the 1/2 inch fitting set with connector 3825512 and adapter 3825511
• The 1/2 inch copper pipe is not stocked by Volvo Penta
• 0.036 kg
• Fuel System group
• Size: 1/2 inch
• Fits: Fuel line connections for Volvo Penta fuel filters / water separators 877763, 877765, 877766, 877768, 877769, 877770, 877771, 889280 and 889281

🔌 Function

Pulls the fuel line's sealing cone or olive against its seat and holds the joint tight.

⚠️ Common Signs of Failure

• Diesel seeping at the union under the nut
• Rounded or burred hexagon flats
• Thread galling that stops the nut pulling the joint up
• Nut found loose after a heat cycle
• Joint that leaks again shortly after retightening

🛠️ Service Notes

• Renew the olive or sealing cone with the nut, as a reused olive rarely seals in a fresh joint
• Part of the Volvo Penta fuel line fittings group. Volvo Penta supplies its fuel filters and water separators without connectors or union nuts, so the fittings for the pipe size in use are ordered alongside the filter.
• The 1/2 inch copper pipe is not stocked by Volvo Penta, so the pipe for this size has to be sourced separately even though the fittings are available

📦 Condition

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