Oil Pan Gasket – Fits Yanmar 2GM Series Marine Engines (Replaces 124000-01751)
Oil Pan Gasket – Fits Yanmar 2GM Series Marine Engines (Replaces 124000-01751) 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 2GM Series Marine Engines (Replaces 12...
Product Details
This high-quality aftermarket Oil Pan Gasket – Fits Yanmar 2GM Series Marine Engines is engineered for a precise fit on 2-cylinder Yanmar 2GM, 2GM20, and 2GM20F series marine diesel engines manufactured in the 1980s and 1990s. It ensures a reliable, leak-free seal between the oil pan and the engine block.
It serves as a direct replacement for Yanmar OEM part number 124000-01751.
- Designed for direct, hassle-free installation.
- Constructed from a durable, fiber-reinforced composite material resistant to oil and coolant.
- Installation requires anaerobic gasket sealant for optimal performance, as per Yanmar's recommendation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 124000-01751 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is compatible with various Yanmar 2GM series marine diesel engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 2GM | 12–13 | 4-Stroke | 1980s | 124000-01751 | Early twin cylinder model |
| Yanmar | 2GM20 | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | |
| Yanmar | 2GM20-YEU | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | Special emission variant |
| Yanmar | 2GM20B | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | |
| Yanmar | 2GM20C | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | |
| Yanmar | 2GM20C-YEU | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | Special emission variant |
| Yanmar | 2GM20F | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | F designates freshwater cooling |
| Yanmar | 2GM20F-YEU | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | F designates freshwater cooling |
| Yanmar | 2GM20FC-YEU | 18–20 | 4-Stroke | 1980s–1990s | 124000-01751 | FC designates freshwater cooling with variant |
Technical Specs
- Product Type
- Oil Pan/Sump Gasket
- Application
- Marine diesel engines
- Installation
- Direct replacement
- Material
- Fiber-reinforced composite
- Dimensions
- 20 × 20 × 0.1 cm
- Weight
- 0.01 kg (10g)
- Thickness
- 1.2 mm (compressed)
- Temperature Range
- -40°C to 250°C
- Resistance
- Oil & coolant resistant
- Recommended Sealant
- Anaerobic gasket sealant
- Torque Specification
- 22 Nm (16 ft-lb) in a criss-cross pattern
What’s in the Box
- 1 x Oil Pan Gasket (124000-01751)
Installation Notes
- Ensure the engine block and oil pan mating surfaces are completely clean, dry, and free of old gasket material, sealant, or oil residue.
- Apply a thin, even bead of anaerobic gasket sealant to the oil pan's flange, as recommended by the engine manufacturer.
- Carefully position the new gasket onto the oil pan, ensuring all bolt holes are perfectly aligned.
- Install the oil pan and tighten the bolts in a criss-cross pattern to the specified torque of 22 Nm (16 ft-lb) to ensure an even, secure seal.
Troubleshooting & FAQ
How do I know if this gasket fits my Yanmar engine?
This gasket is specifically designed for the Yanmar 2GM, 2GM20, and 2GM20F series marine engines. To ensure a perfect match, please verify your engine model against the detailed list in our "Engine & Model Compatibility" table.
What are the signs of a failing oil pan gasket?
Common signs include oil leaks or drips appearing under the engine, a consistently low engine oil level, or visible extruded gasket material from the joint between the oil pan and engine block.
What type of sealant should I use for installation?
For a durable, leak-proof seal, it is highly recommended to use an anaerobic gasket sealant. Apply a thin, even layer to the clean surface of the oil pan before placing the gasket.
When should the oil pan gasket be replaced?
There is no mandatory service interval. The gasket should be replaced whenever the oil pan is removed for maintenance or if you detect any signs of oil leakage from the pan seal.
Is this aftermarket gasket as good as the OEM part?
This listing is an aftermarket replacement (not OEM). It is built to meet or exceed OEM-level specifications using comparable high-quality, oil-resistant materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected to ensure quality and consistency.
What are your shipping options and costs?
We ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most regions, with expedited options available at checkout where applicable.
What is your warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their 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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