Rear Seal Cover Gasket – Fits Yanmar 1GMY/2GMY Series (Replaces 105582-82041)
Rear Seal Cover Gasket – Fits Yanmar 1GMY/2GMY Series (Replaces 105582-82041) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Rear Seal Cover Gasket – Fits Yanmar 1GMY/2GMY Series (Replaces 105...
Product Details
This high-quality Rear Seal Cover Gasket is engineered to fit Yanmar 1GMY, 1GMY-C, 1GMY-EC, 2GMFYE-E, and 2GMYE-EC series marine engines, providing a reliable seal to prevent oil leaks between the rear seal cover and the engine block.
It serves as a direct replacement for Yanmar part number 105582-82041 and other aftermarket equivalents.
- Designed for a direct fit, simplifying installation.
- Constructed from high-quality gasket material for durability and a secure seal.
- Engineered to prevent oil leaks from the rear seal cover.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 105582-82041 |
| AM | AM105582-82041 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed specifically for the following Yanmar marine engines.
| Brand | Model | OEM Part No. |
|---|---|---|
| Yanmar | 1GMY | 105582-82041 |
| Yanmar | 1GMY-C | 105582-82041 |
| Yanmar | 1GMY-EC | 105582-82041 |
| Yanmar | 2GMFYE-E | 105582-82041 |
| Yanmar | 2GMYE-EC | 105582-82041 |
Technical Specs
- Product Type
- Rear Seal Cover Gasket
- Installation
- Direct fit replacement
- Housing Material
- High-quality gasket material
- Dimensions
- Height: 51.0mm; Width: 37.0mm; Length: 37.0mm
- Other Technical Attributes
- Designed to prevent oil leaks between the rear seal cover and engine block
What’s in the Box
- 1 x Rear Seal Cover Gasket (105582-82041)
Installation Notes
- Ensure the engine is turned off and has cooled down completely. Disconnect the battery terminals.
- Drain the engine oil to prevent spills during the process.
- Depending on your vessel's configuration, remove components obstructing access to the rear of the engine, such as the transmission or flywheel housing.
- Carefully unbolt and remove the rear seal cover from the engine block.
- Remove the old gasket and thoroughly clean both mating surfaces. Ensure they are free of old gasket material, sealant, oil, and debris.
- Position the new gasket onto the clean, dry surface of the engine block or cover.
- Reinstall the rear seal cover, ensuring it is properly aligned. Tighten the bolts in a crisscross pattern to the manufacturer's specified torque.
- Reassemble all other components that were removed.
- Refill the engine with the correct type and amount of oil. Reconnect the battery.
- Start the engine and carefully check for any oil leaks around the newly installed gasket.
Troubleshooting & FAQ
How do I know if this gasket will fit my Yanmar engine?
This gasket is specifically designed for Yanmar models 1GMY, 1GMY-C, 1GMY-EC, 2GMFYE-E, and 2GMYE-EC. Please verify your engine model and cross-reference the OEM part number 105582-82041 to ensure compatibility.
What are the signs of a failing rear seal cover gasket?
The most common sign is an active oil leak from the area where the engine block meets the flywheel housing or transmission. You may notice oil residue on the engine or in the bilge below the engine.
Should I use sealant with this gasket?
Generally, this type of gasket is designed to be installed dry on clean, flat surfaces. However, always consult your engine's service manual for specific recommendations, as a small amount of sealant may be advised in certain areas.
How often should this gasket be replaced?
This gasket typically does not have a set replacement interval. It should be replaced whenever the rear seal cover is removed for service or if an oil leak is detected from the sealing joint.
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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