Volvo Penta DuoProp Propeller Shaft Sealing Ring – 853807

The Volvo Penta 853807 is a genuine Volvo Penta OEM propeller shaft sealing ring used in select Volvo Penta sterndrive lower gear housing assemblies. This seal is installed at the propeller shaft sealing area where the Volvo Penta parts diagram calls for 853807, helping retain gear lubricant inside the drive while helping prevent raw-water intrusion around the rotating propeller shaft.

Key Features

• Genuine Volvo Penta factory OEM propeller shaft sealing ring.
• Volvo Penta part number: 853807.
• Used in select lower gearcase propeller shaft sealing locations.
• Helps seal the rotating propeller shaft where it exits the gear housing.
• Commonly associated with DuoProp lower-unit service where inner and outer propeller shaft sealing points are serviced together.
• Related outer propeller shaft seal reference: 853808, where specified by the Volvo Penta diagram.
• GTIN/UPC references: 0745061825598 / 7332869029490.

Application Compatibility

Common where-used application groups include select Volvo Penta sterndrive lower gear units by drive model, serial number, and gear housing diagram, including:

• 280SP / 280DP applications where specified
• 290SP / 290DP applications where specified
• DP-A / DP-B / DP-C / DP-D / DP-E applications where specified
• DPS-A / DPS-B applications where specified
• DP-SM applications where specified
• DPX applications where specified
• Select DuoProp lower gear housings using paired inner and outer propeller shaft seals

Use this sealing ring only where the Volvo Penta lower gear housing diagram specifically calls for 853807.

Fitment Notice

Confirm fitment by Volvo Penta drive model, drive serial number, lower gear housing type, propeller shaft arrangement, and exact parts diagram before ordering. Single-prop and DuoProp drives can use different propeller shaft seals, bearing carriers, spacers, and hardware depending on drive generation and gear housing design.

When This Part Needs Replacement

Replace this sealing ring if gear oil is leaking from the propeller shaft area, water is found in the gear lubricant, the seal lip is hardened, cut, distorted, or worn, or the seal is removed during lower gear housing service. It should also be inspected after fishing line, debris, or propeller shaft corrosion is found behind the propeller hardware.

Installation Notes

Inspect the propeller shaft sealing surface, bearing carrier, seal bore, shaft condition, propeller hardware, and related O-rings before installing the new seal. A grooved, pitted, or corroded shaft can damage the new seal and cause repeat leakage. On DuoProp drives, inspect the related outer propeller shaft seal 853808 and surrounding hardware at the same time. After resealing, pressure/vacuum test the drive before refilling with gear lubricant.

Alternate/Superseded Part Numbers

• 853807 Volvo Penta propeller shaft sealing ring
• 853808 related outer propeller shaft seal reference; verify by drive diagram before ordering

Parts Desk Insight

Propeller shaft seals should be treated as part of the complete lower-unit sealing system. If water has entered the drive oil, inspect the prop shaft seals, shaft surface, bearing carrier, drain plug seals, and pressure/vacuum test results together rather than replacing one seal without confirming the leak point.

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