Gasket/Seal for Top Cover – Fits Volvo Penta AQ270, AQ275, AQ280, AQ290 (Replaces 832669)
Gasket/Seal for Top Cover – Fits Volvo Penta AQ270, AQ275, AQ280, AQ290 (Replaces 832669) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Gasket/Seal for Top Cover – Fits Volvo Penta AQ270, AQ275, AQ280, A...
Product Details
This is a high-quality aftermarket Gasket/Seal for Top Cover designed for Volvo Penta AQ270, AQ275, AQ280, and AQ290 sterndrive upper gear housing assemblies. It ensures a precise fit and reliable seal to prevent leaks and maintain performance.
This part is a direct replacement for Volvo Penta 832669, Sierra 18-2990, and GLM 87010, offering a dependable and cost-effective alternative to OEM components.
- Engineered as a direct-fit replacement for straightforward installation.
- Used on both old and new type upper gear housings.
- Backed by a Limited Lifetime Warranty (Sierra brand).
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 832669 |
| Sierra | 18-2990 |
| GLM | 87010 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Volvo Penta | AQ270 | 832669 | Upper gear housing |
| Volvo Penta | AQ275 | 832669 | Upper gear housing |
| Volvo Penta | AQ280 | 832669 | Upper gear housing |
| Volvo Penta | AQ290 | 832669 | Upper gear housing |
Technical Specs
- Product Type
- Upper Gear Housing Gasket/Seal
- Installation
- Direct replacement
- Dimensions
- 7.5" L x 6.0" W x 1.13" H
- Weight
- 0.02 lb (0.009 kg)
- Warranty
- Limited Lifetime (Sierra brand)
- Other Technical Attributes
- Used on upper gear housing (old type and new type)
What’s in the Box
- 1 x Gasket/Seal for Top Cover (832669)
Installation Notes
- Ensure the engine is off and the sterndrive is trimmed to a safe working position. Disconnect the battery for safety.
- Drain the gear lube from the upper gear housing to prevent spills.
- Remove the top cover fasteners and carefully lift the cover off the housing.
- Clean both the cover and the housing mating surfaces thoroughly, removing all old gasket material and sealant residue.
- Place the new gasket onto the housing, ensuring all bolt holes are correctly aligned.
- Reinstall the top cover and tighten the fasteners in a star or crisscross pattern to the manufacturer's specified torque.
- Refill the gear housing with the correct type and amount of sterndrive lubricant.
- Check for leaks before, during, and after the first use to confirm a proper seal.
Troubleshooting & FAQ
How do I know if this gasket will fit my specific Volvo Penta model?
This gasket is designed for Volvo Penta AQ270, AQ275, AQ280, and AQ290 sterndrives. Please cross-reference your existing part number with 832669 (Volvo Penta), 18-2990 (Sierra), or 87010 (GLM) to ensure compatibility.
What are the signs of a failing top cover gasket?
Common signs include milky or water-contaminated gear lube, visible oil leaks around the top cover of the sterndrive, or a low gear lube level without an obvious external leak source.
Do I need to use sealant with this gasket?
Generally, this type of gasket is designed to be installed dry. However, always consult your specific service manual, as some applications may recommend a light application of a non-hardening sealant.
What is the recommended replacement interval?
It's best practice to replace this gasket any time the top cover is removed for service or inspection. Regular inspection for leaks during routine maintenance is also recommended.
Can I install this gasket myself?
While installation can be done by a mechanically inclined individual with the right tools, professional installation is recommended to ensure a proper seal and prevent damage to sterndrive components. Always follow the service manual procedures.
My old gasket looks different. Can I still use this one?
This part is designed for both old and new type upper gear housings. As long as your model is listed as compatible and the part number cross-references correctly, it should fit. However, if there are significant visual differences, verify fitment before installation.
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 vs 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.
Payment & Security
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