Volvo Penta Transom Shield Sterndrive O-Ring 3852537

Volvo Penta 3852537 is a genuine OEM O-ring used in select sterndrive and transom shield sealing applications. Current parts references consistently place this seal in Volvo Penta DPH-A marine propulsion and transom shield assemblies, where correct sealing is important for service work involving adjacent hoses, pipes, or shield-mounted components.

Key Features

• Genuine Volvo Penta OEM part number 3852537.
• Referenced in Volvo Penta DPH-A marine propulsion schematics as an O-ring used in the transom shield area.
• Also shown in transom shield parts references for SX/SX-A style sterndrive assemblies.
• Current cross-reference listings also associate this part with OMC/BRP reference 911729.

Engine Compatibility

Supportable current references connect 3852537 most strongly to Volvo Penta transom shield and sterndrive applications rather than a single engine long-block family. It is shown in DPH-A marine propulsion parts breakdowns and in transom shield references for SX and SX-A related sterndrive assemblies, so the safest fitment path is to match it to the correct shield or drive schematic by serial number.

Serial Number Fitment Notice

Transom shield and drive-side sealing parts can vary by sterndrive model, production break, and assembly version. Match Volvo Penta part number 3852537 against your drive or transom shield diagram and serial number before ordering to confirm the correct sealing location.

When This Part Needs Replacement

Replace this O-ring any time the related transom shield or sterndrive sealing point is opened for service, or when the original seal shows flattening, hardening, cuts, swelling, or signs of seepage. Replacing a compressed O-ring during reassembly is usually the better choice than reopening the same job later for a minor leak.

Installation Notes

Confirm the old seal matches the new OEM part before installation and inspect the groove and mating surfaces for corrosion, residue, or nicks. Install on a clean surface and avoid twisting or over-stretching the O-ring during assembly. On sterndrive and transom components, proper seating matters more than a quick visual size match.

Alternate/Superseded Part Numbers

Current cross-reference listings associate Volvo Penta 3852537 with OMC/BRP 911729 for reference purposes. The sources reviewed continue to list 3852537 as the active Volvo Penta OEM number.

Parts Desk Insight

With shield and drive O-rings, the easy mistake is assuming any similar-looking seal will work. Matching the exact transom shield or drive schematic first usually saves repeat labor, especially when several nearby O-rings look almost identical on the bench.

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