Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series (Replaces Yanmar 128270-12540, 128377-12530)
Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series (Replaces Yanmar 128270-12540, 128377-12530) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series (Replace...
Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series (Replaces Yanmar 128270-12540, 128377-12530) is backordered and will ship as soon as it is back in stock.
Product Details
This Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series Diesel Engines is a direct-fit replacement for Yanmar marine diesel engines. It is specifically designed for models in the 2GM, 3GM, 2YM, and 3YM series, including popular 2GM20 and 3GM30 variants, covering four-stroke engines from 15-30 HP manufactured from 1980 to the present.
This part serves as a direct interchange for Yanmar part numbers 128270-12540 and 128377-12530, as well as Sierra part numbers 18-57703 and 18-79960.
- Engineered for direct-fit installation.
- Provides both air filtration and engine noise reduction.
- Constructed with a durable paper filter media and metal mesh frame.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 128270-12540 |
| Yanmar | 128377-12530 |
| Sierra | 18-57703 |
| Sierra | 18-79960 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This air filter is designed for a wide range of Yanmar marine diesel engines. Please check your specific model and part number before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 1GM, 1GML, 1GML-G2, 1GMY-C, 1GMY-EC, 1GMYS-C, 1GMYS-EC | 7-9 | 4-Stroke | 128270-12540 | ||
| Yanmar | 2GM, 2GMF | 4-Stroke | 1980–1983 | 128270-12540 | ||
| Yanmar | 2GM20, 2GM20B, 2GM20C, 2GM20F, 2GM20FV, 2GM20FVE, 2GM20V, 2GM20VE | 16-20 | 4-Stroke | 1983–2005 | 128270-12540 | |
| Yanmar | 2GMFL, 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 | 1983–2015 | 128270-12540 | |
| Yanmar | 3GMD, 3GMF, 3GMFLE, 3GMFY, 3GMFY-E, 3GMFYE-E, 3GMLE | 27-30 | 4-Stroke | 128270-12540 | ||
| Yanmar | 3YM20 | 21 | 4-Stroke | 128270-12540 | ||
| Yanmar | 3YM27A | 27 | 4-Stroke | 128270-12540 | ||
| Yanmar | 3YM30, 3YM30AE, 3YM30R | 29-30 | 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
- Housing Color
- Off-white/tan (filter media); silver/metal (frame)
- Warranty
- 1 Year (aftermarket); 6 months (OEM)
- Other Technical Attributes
- Provides both filtration and noise reduction functions
What’s in the Box
- 1 x Air Filter Element (Replaces 128270-12540/128377-12530)
Installation Notes
- Ensure the engine is off and fully cool before beginning work.
- Locate the air filter housing on your engine; it is typically a black plastic or metal cover.
- Release the clips or unscrew the bolts securing the housing cover and remove it.
- Take out the old air filter element, noting its orientation.
- Clean any dust or debris from inside the air filter housing with a clean cloth.
- Insert the new air filter element, ensuring it is seated correctly and securely.
- Replace the housing cover and fasten the clips or bolts.
Troubleshooting & FAQ
How do I know if this air filter fits my Yanmar engine?
This air filter is made for Yanmar 2GM, 3GM, 2YM, and 3YM series engines. To ensure a correct fit, please compare your engine model and original part number to the information in the compatibility chart on this page.
What are the signs of a clogged or failing air filter?
Common symptoms include reduced engine performance, an increase in black exhaust smoke, unusual engine sounds, and decreased fuel economy. A visual inspection will often reveal excessive dirt and blockage in the filter media.
How often should this air filter be replaced?
For optimal performance, inspect the air filter during regular maintenance checks. We recommend replacing it at least once per season or every 200-250 hours of use, whichever comes first. Replacement may be needed more frequently in exceptionally dusty or salt-spray environments.
Is this aftermarket filter as good as the OEM part?
Yes. This filter is manufactured to meet or exceed original equipment manufacturer (OEM) specifications for filtration efficiency, airflow, and durability. It serves the same dual purpose of filtration and noise dampening as the genuine Yanmar part.
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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