Air Filter Element for Yanmar 1GM, 2GM, 3GM, 2YM & 3YM Series – Replaces Yanmar 128270-12540 and 128377-12530
Air Filter Element for Yanmar 1GM, 2GM, 3GM, 2YM & 3YM Series – Replaces Yanmar 128270-12540 and 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.
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Air Filter Element for Yanmar 1GM, 2GM, 3GM, 2YM & 3YM Series –...
Air Filter Element for Yanmar 1GM, 2GM, 3GM, 2YM & 3YM Series – Replaces Yanmar 128270-12540 and 128377-12530 is backordered and will ship as soon as it is back in stock.
Product Details
This air filter element is designed as an aftermarket replacement for selected Yanmar marine diesel engines in the 1GM, 2GM, 3GM, 2YM, and 3YM series. Listed applications include models such as the 2GM20, 3GM30, 2YM15, 3YM20, 3YM27A, and 3YM30. Always compare the original filter and part number before ordering, especially where model variants or production years overlap.
This filter is listed as a replacement for Yanmar part numbers 128270-12540 and 128377-12530, and as an interchange for Sierra part numbers 18-57703 and 18-79960.
- Replacement air filter element for selected Yanmar marine diesel engines.
- Designed to support engine air filtration and intake noise reduction.
- Paper filter media with a metal mesh backing or frame.
- Single-element replacement; mounting hardware is not included unless separately specified.
Part Number Matrix
Use the following references to compare the filter with the part removed from your engine.
| Brand | Part Number |
|---|---|
| Yanmar | 128270-12540 |
| Yanmar | 128377-12530 |
| Sierra | 18-57703 |
| Sierra | 18-79960 |
Engine & Model Compatibility
The applications below are compiled from the supplied fitment information. Model, year, engine configuration, and original part number should be checked together before purchase.
| 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 | Not specified | 128270-12540 | Verify the original filter before ordering. |
| Yanmar | 2GM, 2GMF | Not specified | 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 | Not specified | 128270-12540 | |
| Yanmar | 2YM15 | 15 | 4-Stroke | Not specified | 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 | Not specified | 128270-12540 | |
| Yanmar | 3YM20 | 21 | 4-Stroke | Not specified | 128270-12540 | |
| Yanmar | 3YM27A | 27 | 4-Stroke | Not specified | 128270-12540 | |
| Yanmar | 3YM30, 3YM30AE, 3YM30R | 29–30 | 4-Stroke | Not specified | 128270-12540 |
Technical Specs
- Product Type
- Air filter element
- Installation
- Replacement element for the original air filter housing
- Dimensions
- Inside diameter: 98 mm (3.8 in); outside diameter: 107 mm (4.2 in); height: 77 mm (3.03 in)
- Filter Media
- Paper filter media
- Frame or Backing
- Metal mesh backing or frame
- Color
- Off-white or tan filter media with a silver-colored metal frame
- Other Technical Attributes
- Provides air filtration and may also contribute to intake noise reduction
What’s in the Box
- 1 x Air filter element
Replacement mounting hardware, gaskets, and additional filters are not included unless specifically stated in the order details.
Installation Notes
- Turn off the engine and allow it to cool completely before beginning work.
- Locate the air filter housing on the engine.
- Release the clips or remove the fasteners securing the housing cover.
- Remove the old filter element and note its orientation.
- Clean dust and debris from inside the housing with a clean, lint-free cloth.
- Compare the new element with the old one, then install it in the same orientation.
- Make sure the element is seated correctly and that the housing seal is properly positioned.
- Refit the housing cover and securely fasten the clips or bolts before starting the engine.
Troubleshooting & FAQ
How do I know if this air filter fits my Yanmar engine?
Compare your complete engine model, configuration, original filter dimensions, and original part number with the information on this page. The listed applications include selected 1GM, 2GM, 3GM, 2YM, and 3YM series engines, but model names alone may not confirm the correct filter.
What are the signs of a clogged air filter?
Possible symptoms include reduced engine performance, increased black exhaust smoke, unusual intake noise, and reduced fuel economy. A visual inspection may show excessive dirt, oil contamination, or blocked filter media.
How often should this air filter be replaced?
Inspect the element during regular engine maintenance and replace it when it is dirty, damaged, oil-soaked, or otherwise restricted. Replacement intervals depend on operating hours and environmental conditions; dusty or salt-laden environments may require more frequent inspection.
Is this an OEM Yanmar filter?
No. This listing is for an aftermarket replacement air filter element. Compare the part number, dimensions, and filter construction with the original component before installation.
Does the filter include a complete air filter housing?
No. The package contains one replacement air filter element only. The original housing, cover, fasteners, and any separate seals or gaskets are not included unless specifically stated.
Shipping speed & cost
Typical transit is 5–15 days depending on destination and shipping method. Available shipping options and costs are shown at checkout.
Warranty & returns
Warranty coverage and return eligibility are governed by the applicable order and store policies. Contact support with your order details if the item arrives damaged or appears to have a manufacturing defect.
Safety & Important Information
- Confirm the engine model, original part number, dimensions, and filter appearance before ordering.
- Do not operate the engine with the air filter element or housing cover improperly installed.
- Replace the element if it is damaged, deformed, contaminated, or cannot seal correctly.
- This is an aftermarket replacement and is not represented as a genuine Yanmar component.
- Professional installation is recommended when the correct engine application or installation procedure is uncertain.
About Sea Sierra
- Marine Replacement Parts — Replacement components selected for common marine engine service needs.
- Global Fulfillment — Shipping options are available for customers in many regions.
- Practical Value — Aftermarket alternatives intended to provide a straightforward replacement option.
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