HomeAir and Fuel Delivery > FiltersWix 42728 Air Filter
Part #: 42728

Wix 42728 Air Filter

⚙️ 28 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Subaru, Baja, Forester, Impreza, Legacy, and Outback
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Overview of Wix Engine Air Filter 42728

The Wix 42728 engine air filter is designed to provide reliable air filtration for select Subaru models. Engineered with cellulose media and a panel style design, this filter ensures efficient airflow and contaminant capture for vehicles like the Subaru Forester, Outback, and Impreza.

  • Compatible with Subaru Baja, Forester, Impreza, Legacy, and Outback
  • Panel style air filter with cellulose media material
  • Dimensions: 14.586 inches length, 6.633 inches width, 1.358 inches height
  • Inner diameter top is closed for secure fitment
  • Class C filter designed for light-duty (Ld) applications

Technical Specifications and Design Features

The Wix 42728 engine air filter features a cellulose media material that effectively traps dust, dirt, and other airborne particles, protecting the engine from contaminants. Its panel style design allows for easy installation and replacement in compatible Subaru vehicles. The filter measures 14.586 inches in length, 6.633 inches in width, and 1.358 inches in height, with a closed inner diameter top to ensure a proper seal within the air intake system. Classified as a Class C filter for light-duty use, it is engineered to meet the airflow and filtration requirements of Subaru models such as the Legacy and Baja.

Compatible Subaru Models and Applications

This Wix engine air filter 42728 is specifically compatible with the following Subaru vehicles: Baja, Forester, Impreza, Legacy, and Outback. It is designed to maintain optimal engine performance by filtering incoming air and preventing harmful particles from entering the combustion chamber. Using the correct air filter helps maintain fuel efficiency and engine longevity in these models.

  • Prevents engine wear caused by dust and debris
  • Helps maintain proper air-to-fuel ratio for efficient combustion
  • Reduces risk of engine misfires and rough idling
  • Protects turbocharger components in turbocharged Subaru models
  • Supports emission control by ensuring clean airflow

Installation Notes and Tips

Installing the Wix 42728 engine air filter is straightforward for compatible Subaru models. Before installation, ensure the engine is cool and the air filter housing is clean. Remove the old filter carefully to avoid debris entering the intake. Insert the Wix 42728 filter with the closed inner diameter top positioned correctly to create a secure seal. Verify that the filter fits snugly within the housing to prevent unfiltered air bypass. Regular inspection and replacement according to the vehicle manufacturer’s maintenance schedule are recommended.

Quality Assurance and Warranty Information

Wix filters are manufactured to meet industry standards for filtration efficiency and durability. The 42728 engine air filter undergoes quality control testing to ensure consistent performance in Subaru vehicles. While specific warranty details may vary, Wix typically offers a limited warranty against defects in materials and workmanship. Refer to Wix documentation for complete warranty terms.

BrandWix
Part Number42728
ClassC
Duty TypeLD
Height1.358
Inner Diameter TopClosed
Length14.586
Media MaterialCellulose
StyleAir Filter Panel
Width6.633

This part fits 28 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006SubaruBaja2.5LH4N/A
2005SubaruBaja2.5LH4N/A
2004SubaruBaja2.5LH4N/A
2004SubaruForester2.5LH4N/A
2004SubaruImpreza2.5LH4N/A
2004SubaruLegacy2.5LH4N/A
2004SubaruOutback2.5LH4N/A
2003SubaruBaja2.5LH4N/A
2003SubaruForester2.5LH4N/A
2003SubaruImpreza2.5LH4N/A
2003SubaruLegacy2.5LH4N/A
2003SubaruOutback2.5LH4N/A
2002SubaruForester2.5LH4N/A
2002SubaruImpreza2.5LH4N/A
2002SubaruLegacy2.5LH4N/A
2002SubaruOutback2.5LH4N/A
2001SubaruForester2.5LH4N/A
2001SubaruImpreza2.5LH4N/A
2001SubaruImpreza2.2LH4N/A
2001SubaruLegacy2.5LH4N/A
2001SubaruOutback2.5LH4N/A
2000SubaruForester2.5LH4N/A
2000SubaruImpreza2.5LH4N/A
2000SubaruImpreza2.2LH4N/A
2000SubaruLegacy2.5LH4N/A
2000SubaruOutback2.5LH4N/A
1999SubaruImpreza2.2LH4N/Awith California Emissions
1999SubaruLegacy2.2LH4N/Awith California Emissions

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

AF 7965DA9113LX 1518MA5353SA-061SA061SA9113VA150

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.