Oil Pan Gasket – Fits Yanmar 1GM10 Series Engines (Replaces 128170-01751, 128170-01750)
Oil Pan Gasket – Fits Yanmar 1GM10 Series Engines (Replaces 128170-01751, 128170-01750) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Pan Gasket – Fits Yanmar 1GM10 Series Engines (Replaces 128170-...
Product Details
This high-quality, non-asbestos Oil Pan Gasket – Fits Yanmar 1GM10 Series Engines provides a reliable seal between the oil pan and the engine block. It is designed for Yanmar Marine's 1-cylinder, 4-stroke diesel engines, including the 1GM and 1GM10 series (7-9 HP).
This part is a direct replacement for Yanmar OEM part numbers 128170-01751 and its superseded predecessor, 128170-01750.
- Seals the oil pan (sump) to the engine block to prevent oil leaks.
- Engineered from a durable, non-asbestos composite for longevity.
- Includes a 6-month warranty against manufacturing defects.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Supersedes |
|---|---|---|
| Yanmar | 128170-01751 | 128170-01750 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for Yanmar's 1GM and 1GM10 series of small marine diesel engines, commonly used in sailboats and other small craft.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yanmar | 1GM | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GM10 | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GM10VE | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GM10-B | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GM10C | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GM10L | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GML | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GMY-C | 7-9 | 4-Stroke | 128170-01751 | |
| Yanmar | 1GMY-EC | 7-9 | 4-Stroke | 128170-01751 |
Technical Specs
- Product Type
- Oil Pan Gasket (Non-Asbestos)
- Installation
- Between oil pan/sump and engine block
- Material
- Non-asbestos composite
- Dimensions
- 24.0" L x 12.0" W x 0.2" H
- Weight
- 0.49 kg (1.08 lb)
- OEM Part Number
- 128170-01751
- Supersedes
- 128170-01750
- Warranty
- 6 months (when purchased from authorized dealers)
What’s in the Box
- 1 x Gasket, Oil Sump (Replaces 128170-01751)
Installation Notes
- Ensure the engine is off, cool, and the battery is disconnected.
- Place a drain pan under the engine and remove the oil drain plug to empty the oil.
- Systematically loosen and remove the bolts securing the oil pan to the engine block.
- Carefully lower the oil pan. You may need to gently tap it with a rubber mallet to break the seal.
- Remove the old gasket and discard it.
- Thoroughly clean any old gasket material or sealant from both the engine block and the oil pan mating surfaces.
- Place the new gasket onto the clean oil pan, aligning all bolt holes.
- Reattach the oil pan to the engine block, tightening the bolts in a crisscross pattern to the torque specified in your service manual. Do not overtighten.
- Replace the drain plug, refill the engine with the correct grade and amount of oil, and reinstall the oil filter if removed.
- Reconnect the battery, start the engine, and carefully inspect for any oil leaks around the pan.
Troubleshooting & FAQ
How do I know if this gasket will fit my Yanmar engine?
This gasket is specifically designed for Yanmar's 1-cylinder 1GM and 1GM10 series engines (7-9 HP). Please verify your engine model against the compatibility chart on this page before ordering.
What are the signs of a failing oil pan gasket?
The most common indicators of a bad gasket are visible oil drips or puddles under the engine, consistently low oil levels, or a burning oil smell while the engine is running. A visual inspection may show oil seepage along the seam where the oil pan meets the engine block.
Do I need to use sealant with this gasket?
This gasket is typically designed for a dry installation. However, we always recommend consulting your engine's official service manual for model-specific instructions, as some applications may require a small amount of sealant at joints or corners.
What is the difference between an OEM and an aftermarket part?
This listing is an aftermarket replacement (not OEM). It's built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.
What are your shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders; any available expedited options and their costs will be displayed at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original packaging. 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.
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