Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series Diesel Engines (Replaces 128270-12540)

Air Filter Element – Fits Yanmar 2GM, 3GM, 2YM, 3YM Series Diesel Engines

This air filter element is designed for Yanmar marine diesel engines, including the 2GM, 3GM, 2YM, and 3YM series. It is compatible with a wide range of Yanmar four-stroke engines from 15 to 30 HP, covering models such as the 2GM20 and 3GM30 variants (1980–present).

It serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring broad compatibility for routine maintenance and repairs.

• Installation Type: Direct replacement
• Primary Function: Provides essential air filtration and helps reduce engine intake noise.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Air Filter Element (Replaces 128270-12540 / 128377-12530)

Installation Guide

1. Shut Down Safely: Turn off the engine and allow it to cool completely before starting work. Disconnect the battery as a safety precaution.
2. Locate Air Filter Housing: Find the air filter assembly on your engine. Its location can vary, so consult your engine's service manual if you are unsure.
3. Open Housing: Remove the cover from the air filter housing. It is typically held in place by clips, screws, or wing nuts.
4. Remove Old Filter: Take out the old filter element. Pay attention to its orientation and check for any gaskets or seals that may need to be transferred or replaced.
5. Clean the Housing: Use a clean, dry cloth or a vacuum to remove any dust, dirt, or debris from the inside of the housing. Ensure the sealing surface is clean.
6. Install New Filter: Insert the new air filter element, making sure it is properly seated and creates a firm seal all the way around.
7. Secure the Cover: Re-install the housing cover and fasten it securely with its clips, screws, or nuts. Do not overtighten.

Troubleshooting & FAQ

Q: How do I confirm this filter fits my Yanmar engine?

A: The best way is to match your existing part number to one of the numbers listed in our Part Number Cross-Reference table. You can also verify your engine model is included in the Compatible Engine Models list. When in doubt, compare the filter's dimensions with your old part.

Q: What are the signs that my air filter needs to be replaced?

A: Common signs of a clogged or failing air filter include a noticeable drop in engine power, increased fuel consumption, or excessive black smoke from the exhaust. A visual inspection showing a dirty, dark, or debris-filled filter is also a clear indicator for replacement.

Q: How often should I replace the air filter element?

A: Service intervals vary based on your engine's operating environment. For typical leisure use, we recommend inspecting the filter every 100-200 hours and replacing it annually or whenever it appears dirty or clogged. In dusty or high-pollen environments, more frequent checks are necessary.

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?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.