Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series Diesel Engines (Replaces 128270-12540)
This air filter element 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 is a direct replacement for Yanmar part number 128270-12540 (also listed as 28270-12540) and Sierra part number 18-57703.
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Installation Method: Direct replacement
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Primary Function: Provides both air filtration and engine noise reduction.
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Package Includes: 1 x Air Filter Element
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand |
Part Number |
Yanmar |
128270-12540 |
Yanmar |
28270-12540 |
Sierra |
18-57703 |
Compatible Engine Models
Confirm your engine model/year in the table below.
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 Specifications
Specification |
Value |
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 |
Other Technical Attributes |
Provides both filtration and noise reduction functions |
Package Contents
- 1 x Air Filter Element (128270-12540/28270-12540)
Installation Guide
- Locate the air filter housing on your Yanmar engine.
- Remove the cover, which is typically held in place by clips or wing nuts.
- Carefully take out the old air filter element. Note its orientation.
- Inspect the housing for any debris and wipe it clean if necessary.
- Insert the new JLM Marine air filter element, ensuring it is seated correctly within the housing.
- Replace the cover and secure it firmly.
Troubleshooting & FAQ
Q: How do I know if this air filter fits my specific Yanmar engine model?
A: This filter is designed for Yanmar's 2GM, 3GM, 2YM, and 3YM series engines. Please check the "Compatible Engine Models" table on this page to confirm your exact model is listed. Verifying the part number 128270-12540 is the best way to ensure a match.
Q: Is this just a noise suppressor or a real air filter?
A: This component serves a dual function. It is designed to reduce intake noise, but it also provides essential air filtration. The paper filter element is supported by a metal mesh frame, which prevents any filter material from disintegrating and being ingested by the engine.
Q: How often should I replace this air filter element?
A: Replacement intervals depend on the operating environment (e.g., dusty or saltwater conditions) and hours of use. We recommend inspecting the filter during routine maintenance and replacing it annually or when it appears dirty or clogged to ensure optimal engine performance and protection.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.