35-879172143 Foam Air Filter for MerCruiser 2.0L QSD 2.0L EI | JLM Marine

Foam Air Filter for MerCruiser 2.0L QSD & 2.0L EI Engines

This high-quality foam air filter is engineered to fit MerCruiser 2.0L QSD and 2.0L EI inboard and sterndrive engines, delivering reliable filtration for models ranging from 115 HP to 170 HP. Designed as a direct replacement for MerCruiser part number 35-879172143 (supersedes 879172143), this filter ensures optimal airflow and engine protection across a wide range of serial number applications.

Whether you're maintaining a sterndrive or inboard configuration, this air filter element provides consistent performance and easy installation. It is compatible with multiple engine families, including both the inline CMD QSD series and the 2.0L EI platform, making it a versatile solution for your MerCruiser engine needs.

• Direct replacement for MerCruiser OEM part numbers 35-879172143 and 879172143
• Fits MerCruiser 2.0L QSD and 2.0L EI engines (115 HP to 170 HP)
• Foam construction for effective air filtration and engine protection

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. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This package includes:

• 1 × Air Filter Element

Installation Guide

1. Ensure the engine is off and cool before beginning any work.
2. Locate the air filter housing on your MerCruiser engine, typically near the intake manifold.
3. Remove the housing cover by loosening the clamps or fasteners securing it in place.
4. Carefully remove the old air filter element from the housing.
5. Inspect the housing interior for debris or contamination and clean if necessary.
6. Insert the new foam air filter element, ensuring it is properly seated and aligned.
7. Reinstall the housing cover and tighten all clamps or fasteners securely.
8. Double-check that all connections are secure and there are no gaps around the filter.
9. Start the engine and verify that it runs smoothly with no unusual sounds or air leaks.

Troubleshooting & FAQ

Q: How do I confirm this air filter fits my MerCruiser engine?
A: Cross-reference your engine's serial number with the compatibility table above. Verify that your engine model (2.0L QSD or 2.0L EI) and serial range match the listings provided. You can also check your engine's parts diagram using the MerCruiser parts catalog link.

Q: How often should I replace my air filter?
A: Inspect your air filter every 50–100 hours of operation or at least once per season. Replace it if you notice dirt buildup, damage, or reduced engine performance. Operating in dusty or harsh environments may require more frequent replacement.

Q: What are common signs that my air filter needs replacement?
A: Symptoms include reduced engine power, rough idling, increased fuel consumption, or visible dirt and debris on the filter element. If the filter appears clogged or saturated, replace it immediately to prevent engine damage.

Q: Can I clean and reuse this foam air filter?
A: Foam air filters can sometimes be cleaned with mild soap and water, then re-oiled with appropriate filter oil. However, if the filter is damaged, heavily contaminated, or shows signs of deterioration, replacement is recommended for optimal performance.

Q: What is the difference between this aftermarket filter and the OEM version?
A: This aftermarket air filter is manufactured to meet or exceed OEM specifications using comparable materials and design. It provides reliable filtration at a more competitive price point while maintaining quality standards for your MerCruiser engine.

Q: Is this an OEM or aftermarket part?
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.