Drive Unit Seal Kit – Fits Volvo Penta 280DP 290DP DP-A DP-B DP-C DP-D (Replaces 875741, 876266)

Product Details

This Drive Unit Seal Kit fits Volvo Penta 280DP, 290DP, DP-A, DP-B, DP-C, and DP-D series drives, providing complete sealing for both upper and lower drive units. Designed for AQ280DP, AQ290DP, DP-A, DP-A1, DP-A2, DP-B, DP-C, and DP-D models, this kit ensures reliable protection against water intrusion and maintains proper drive lubrication.

This aftermarket seal kit directly replaces Volvo Penta part numbers 875741 and 876266.

• Complete seal kit for upper and lower drive unit service
• Covers multiple DP-series drive configurations
• Direct-fit replacement for comprehensive drive maintenance

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Part Type

Drive Unit Seal Kit

Application

Upper and lower drive unit sealing

Replaces OEM

875741, 876266

Compatible Drives

Volvo Penta 280DP, 290DP, DP-A, DP-B, DP-C, DP-D series

What's in the Box

• Complete seal kit for upper and lower drive unit

Installation Notes

1. Drain all gear oil from upper and lower drive units before beginning disassembly.
2. Remove the drive unit from the transom assembly following manufacturer service procedures.
3. Carefully separate upper and lower drive housings, noting the position of all components.
4. Remove all old seals, gaskets, and O-rings from mating surfaces.
5. Thoroughly clean all sealing surfaces with a suitable solvent and inspect for damage or corrosion.
6. Install new seals from the kit in the reverse order of removal, ensuring proper orientation.
7. Lubricate seal lips lightly with gear oil or assembly lubricant before installation.
8. Reassemble drive housings with appropriate torque specifications for all fasteners.
9. Reinstall the drive unit to the transom, checking alignment and engagement.
10. Refill with the correct grade and quantity of gear oil per manufacturer specifications.
11. Check for leaks after initial operation and re-torque fasteners as needed.

Troubleshooting & FAQ

How do I know if my drive unit seals need replacement?

Common signs include gear oil leaking from the drive unit, milky or contaminated gear oil indicating water intrusion, visible oil residue around drive housing seams, or difficulty maintaining proper gear oil levels. Regular inspection during seasonal maintenance is recommended.

Can this kit be used for both upper and lower units?

Yes, this seal kit is designed to service both the upper and lower drive unit sealing requirements for the compatible Volvo Penta DP-series drives listed in the compatibility table.

What's the difference between DP-A, DP-B, DP-C, and DP-D drives?

These designations represent different generations and configurations of Volvo Penta's DuoProp drive systems, with variations in gear ratios, propeller configurations, and power ratings. This seal kit is engineered to fit all listed variants, but always verify your specific drive model before ordering.

How often should drive unit seals be replaced?

Seals should be replaced whenever the drive is disassembled for service, typically during major maintenance intervals or propeller shaft work. Also replace immediately if you notice leaks or water contamination in the gear oil.

Do I need any special tools for installation?

Basic hand tools, torque wrench, seal drivers or appropriate-sized sockets, and a service manual with torque specifications are recommended. Some drive configurations may require specialized pullers or alignment tools for proper reassembly.

Will this kit fit 280 and 290 single-prop drives?

This kit is specifically designed for DuoProp (DP) series drives including the 280DP and 290DP variants. Verify your drive model designation to ensure compatibility, as single-prop drives may require different seal kits.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.