Volvo Penta Flange Screw 3852568 | OEM Marine Engine Fastener

Volvo Penta Flange Screw — Part #3852568

A genuine OEM flange screw for Volvo Penta marine engine assemblies. The integrated washer flange distributes clamping load across a wider surface area, reducing the risk of fastener loosening under the vibration and thermal cycling typical of marine engine operation. Manufactured in Sweden to Volvo Penta factory specifications.

Part Details

• Part Number: 3852568
• Country of Origin: Sweden
• Brand: Volvo Penta OEM
• Official Product Type: Flange Screw
• System: Engine assembly fastening (verify diagram for exact location)
• HS Code: 731815
• Sold: Individually

Compatible Applications

• Select Volvo Penta marine engine assemblies where part number 3852568 appears in the parts diagram
• Verify fitment using your engine serial number and the current Volvo Penta parts diagram before ordering — flange screw thread pitch, length, and head size vary between assemblies
• The diagram position is the most reliable fitment reference for this fastener

What This Part Does

Flange screws combine a bolt and washer into a single precision-machined fastener. The flanged head spreads clamping force over a larger area than a standard hex bolt, which helps maintain consistent torque retention in locations subject to engine vibration, heat, and repeated service cycles. Using the correct OEM fastener ensures proper thread engagement and torque specification compliance.

Related Parts

• Volvo Penta Flange Screw 581 – OEM Engine Fastener
• Volvo Penta Flange Screw 636 – OEM Engine Fastener
• Volvo Penta Flange Screw 755 – OEM Engine Fastener
• Volvo Penta Flange Screw 1370 – OEM Engine Fastener
• Volvo Penta Flange Screw 1441 – OEM Engine Fastener
• Volvo Penta Flange Screw 1445 – OEM Engine Fastener

Service Interval

Replace any time a flange screw is removed and shows thread damage, corrosion, deformation of the flange face, or failure to achieve specified torque. Fasteners in high-heat or high-vibration locations (exhaust, manifold, drive mounting) should be inspected at each service and replaced if there is any doubt about thread integrity.

Technical FAQ

Q: How do I confirm this is the correct screw for my engine?
A: Cross-reference part number 3852568 against the Volvo Penta parts diagram for your specific engine model and serial number. Thread size, length, and flange diameter must match the original fastener exactly.

Q: Can I substitute a generic flange screw of the same thread size?
A: For critical engine assembly locations, OEM fasteners are recommended. Volvo Penta specifies fastener grade, thread pitch, and surface treatment for each location — a generic substitute may not meet the torque specification or corrosion resistance required for marine use.

Q: Should I use thread-locking compound on this screw?
A: Follow the Volvo Penta service manual for the specific assembly location. Some locations call for thread-locking compound; others require clean, dry threads or a specific lubricant. Using the wrong compound — or none when required — can affect torque retention.

Parts Desk Insights

Best use case: This screw is the right choice when you need an exact OEM replacement for a specific Volvo Penta assembly and the part number appears in your engine’s diagram. It’s particularly important in locations where the flanged head is doing sealing or load-spreading work that a standard hex bolt cannot replicate.

Common issues we see: Customers occasionally order flange screws by thread size alone without confirming the part number, then find the head diameter or length doesn’t match the original. Always order by the part number shown in your Volvo Penta diagram — not by thread size or visual match to the old fastener.