Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series (Replaces 128270-12540, 18-57703)
Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series (Replaces 128270-12540, 18-57703) 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
Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series (Replace...
Product Details
This Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series Diesel Engines (Replaces 128270-12540) fits Yanmar marine diesel engines in the 2GM, 3GM, 2YM and 3YM series, including 2GM20 and 3GM30 variants. It is compatible with Yanmar four-stroke engines ranging from 15-30 HP (1980–present).
This part is an interchange for Yanmar 128270-12540/28270-12540 and Sierra 18-57703.
- Installs as a direct replacement for the original part.
- Provides both air filtration and engine noise suppression.
- Constructed with a paper filter element and a durable metal mesh frame.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 128270-12540 |
| Yanmar | 28270-12540 |
| Sierra | 18-57703 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This air filter element is designed for a wide range of Yanmar marine diesel engines.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Yanmar | 1GM, 1GML, 1GML-G2, 1GMY-C, 1GMY-EC, 1GMYS-C, 1GMYS-EC | 7-9 | 4-Stroke | 128270-12540 |
| Yanmar | 2GM, 2GM20, 2GM20B, 2GM20C, 2GM20F, 2GM20FV, 2GM20FVE, 2GM20V, 2GM20VE, 2GMFL | 16-20 | 4-Stroke | 128270-12540 |
| Yanmar | 2GMFL-G1, 2GMFL-G2, 2GMFY, 2GMFY-E, 2GML, 2GML-G2, 2GMLP, 2GMLP-C, 2GMSZK, 2GMY, 2GMYE-EC, 2GMZ | 16-20 | 4-Stroke | 128270-12540 |
| Yanmar | 2YM15 | 15 | 4-Stroke | 128270-12540 |
| Yanmar | 3GM, 3GM30, 3GM30B, 3GM30C, 3GM30F, 3GM30FV, 3GM30FVE, 3GM30V, 3GM30VE | 27-30 | 4-Stroke | 128270-12540 |
| Yanmar | 3GMD, 3GMF, 3GMFLE, 3GMFY, 3GMFY-E, 3GMFYE-E, 3GMLE | 27-30 | 4-Stroke | 128270-12540 |
| Yanmar | 3YM20, 3YM27A, 3YM30, 3YM30AE, 3YM30R | 20-30 | 4-Stroke | 128270-12540 |
Technical Specs
- Product Type
- Air Filter Element
- Installation
- Direct replacement
- Dimensions
- ID: 98mm (3.8"), OD: 107mm (4.2"), Height: 77mm (3.03")
- Housing Material
- Paper filter with metal mesh backing/frame
- Function
- Provides both filtration and noise reduction functions
What’s in the Box
- 1 x Air Filter Element (Replaces 128270-12540)
Installation Notes
- Ensure the engine is off and cool to the touch before starting.
- Locate the air filter housing on your engine. It is typically a black plastic or metal case at the engine's air intake.
- Remove the cover, usually held in place by clips, wing nuts, or screws.
- Carefully lift out the old air filter element. Note its orientation.
- Wipe the inside of the housing clean with a lint-free cloth to remove dust and debris.
- Insert the new filter element, making sure it is properly seated and sealed within the housing.
- Replace the housing cover and tighten all fasteners securely.
Troubleshooting & FAQ
Is this part a filter or just a silencer?
This part performs a dual function. It is engineered to act as a noise suppressor (silencer) to reduce engine intake noise while also filtering intake air to prevent contaminants from entering the engine. The metal mesh frame adds structural integrity and prevents any filter material from being ingested by the engine.
How can I confirm this filter fits my specific Yanmar engine?
This air filter element is designed for a broad range of Yanmar engines in the 2GM, 3GM, 2YM, and 3YM series. The best way to confirm fitment is to check the "Engine & Model Compatibility" table on this page and, most importantly, compare the OEM part number (128270-12540) with the part number listed in your engine's service manual.
What are the signs of a worn-out air filter?
Common symptoms of a clogged or failing air filter include a noticeable decrease in engine performance, an increase in black smoke from the exhaust, and higher-than-normal fuel consumption. A visual inspection will often show the filter media is dirty, oily, or has started to disintegrate.
How often should this air filter be replaced?
The replacement interval depends on your engine's operating environment. For engines in dusty or very salty air, more frequent changes are necessary. As a general guideline, inspect the filter at every service interval (or at least annually) and replace it if it appears dirty or damaged. Always follow the maintenance schedule in your Yanmar service manual.
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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