Prop Shaft Seal Kit – Fits Volvo Penta AQ200-AQ290 SP-A SP-C (Replaces 22086, 925258, GLM87830)
Prop Shaft Seal Kit – Fits Volvo Penta AQ200-AQ290 SP-A SP-C (Replaces 22086, 925258, GLM87830) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Prop Shaft Seal Kit – Fits Volvo Penta AQ200-AQ290 SP-A SP-C (Repla...
Prop Shaft Seal Kit – Fits Volvo Penta AQ200-AQ290 SP-A SP-C (Replaces 22086, 925258, GLM87830) is backordered and will ship as soon as it is back in stock.
Product Details
This Prop Shaft Seal Kit is engineered for Volvo Penta sterndrive models AQ200 through AQ290, as well as SP-A and SP-C series drives. Designed for single propeller shaft applications, this seal kit restores watertight integrity and prevents lower-unit water intrusion on compatible Volvo Penta sterndrives.
This kit serves as a direct replacement for Volvo Penta 22086 and 925258, as well as GLM 87830.
- Precision-fit seal components for Volvo Penta AQ and SP sterndrives
- Not compatible with DP-series drives
- Complete seal kit assembly included
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 22086 |
| Volvo Penta | 925258 |
| GLM | 87830 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Notes |
|---|---|---|
| Volvo Penta | AQ250 | |
| Volvo Penta | AQ270, AQ270T | |
| Volvo Penta | AQ275, AQ275A | |
| Volvo Penta | AQ280, AQ280T | |
| Volvo Penta | AQ285A | |
| Volvo Penta | AQ290, AQ290A | |
| Volvo Penta | SP-A, SP-A/MT, SP-A1, SP-A2 | |
| Volvo Penta | SP-C, SP-C1 | |
| Volvo Penta | DP-drives | Not compatible |
Technical Specs
- Condition
- Brand New
- Application
- Single Prop Shaft Seal
- Drive Type
- Volvo Penta AQ and SP Series Sterndrives
- Compatibility
- Not for DP-drives
What's in the Box
- 1 × Seal Kit (complete assembly)
Installation Notes
- Disconnect the battery and remove the propeller from the shaft.
- Remove the lower unit following your service manual's procedure for your specific AQ or SP model.
- Clean the propeller shaft and housing thoroughly, removing old seal residue and debris.
- Inspect the shaft for scoring, pitting, or damage; replace if necessary to prevent premature seal wear.
- Lubricate new seal components with marine-grade grease before installation.
- Install the new seal kit following the orientation and sequence shown in your factory service manual.
- Reassemble the lower unit, ensuring all fasteners are torqued to specification.
- Reinstall the propeller and perform a water test to confirm seal integrity and no leakage.
Troubleshooting & FAQ
How do I know if my prop shaft seal needs replacement?
Common signs include water in the lower unit oil, milky or discolored gear oil, visible leaks around the prop shaft, or increased drag when rotating the propeller by hand. Inspect seals during regular lower-unit service intervals.
Will this kit fit DP-series drives?
No, this seal kit is designed exclusively for Volvo Penta AQ200–AQ290 and SP-A/SP-C sterndrives. It is not compatible with DP-series drives, which require a different seal assembly.
What tools are required for installation?
You will need standard hand tools, a torque wrench, marine-grade grease, seal installation tools or drivers, and a factory service manual for your specific sterndrive model. A press or soft mallet may be needed depending on seal design.
Can I reuse the old seal if it looks okay?
No, seals are single-use components and lose their sealing ability once removed. Always install a new seal kit when servicing the lower unit to ensure reliable, leak-free operation.
How often should prop shaft seals be replaced?
Replace seals during lower-unit rebuilds, if water contamination is detected, or every 2–3 years as preventive maintenance. Inspect seals annually during routine lower-unit oil changes.
What's the difference between this aftermarket kit and the OEM version?
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.
How fast will my order ship, and what are the costs?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
What warranty and return options are available?
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.
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