Denso 143-3200 Air Filter

Denso FTF Air Filter for Subaru Applications

The Denso FTF Air Filter 143-3200 is an engine air filter built for Subaru vehicles that need a direct-fit replacement with consistent filtration performance. It is a rectangular filter measuring 34.0 mm high with side lengths of 281.0 mm and 170.0 mm, making it a fitment-specific choice for select Subaru Forester, Impreza, Baja, Legacy, and Outback models.

Denso’s First Time Fit air filter line focuses on OE-style fit and quality control for straightforward replacement service. If you are searching for a Subaru Forester air filter, Subaru Impreza air filter, or Subaru Outback air filter, part number 143-3200 is listed for multiple factory applications, including California-specific configurations on certain model years.

• Engine air filter for select Subaru vehicles
• Rectangular filter shape: 34.0 mm height, 281.0 mm side A, 170.0 mm side B
• Direct replacement for OE-style service on listed applications
• Part number 143-3200 for easy catalog matching
• First Time Fit product line from Denso

Product Details and Fitment

This Denso 143-3200 engine air filter is engineered for the air intake system on listed Subaru models, helping maintain proper airflow through the engine while capturing airborne contaminants. It cross-references FRAM CA4309 and Wix 46116 for the same application. Confirmed fitment includes 2004-2008 Subaru Forester, 1998-1999 Subaru Forester, 2002-2007 Subaru Impreza, 1993-1999 Subaru Impreza, 2004-2006 Subaru Baja, 2004 Subaru Legacy, 2001-2004 Subaru Outback, 2004 Subaru Outback, 1990-1999 Subaru Legacy, and 1999 Subaru Legacy, with California and OE-number notes where listed.

What This Air Filter Helps Address

• Restricted airflow from a dirty or clogged engine air filter
• Dust and debris entering the intake system
• Uneven service intervals caused by worn filtration media
• Fitment issues from non-OE-style replacement filters
• Routine maintenance needs on Subaru Forester, Impreza, Baja, Legacy, and Outback models

Installation Notes and Tips

Verify the existing filter dimensions and housing shape before installation. This part is a rectangular engine air filter, so the air box should match the listed measurements and application notes. For Subaru Forester, Subaru Impreza, and Subaru Outback service, compare the vehicle year, model, and California/OE reference notes against the fitment list before ordering. Part number 143-3200 should be matched to the air filter housing, not to unrelated intake components.

Quality Assurance

Denso positions the First Time Fit air filter line around OE-level fit and quality control, backed by the company’s experience as a global OEM supplier of engine filtration components. The manufacturer states that quality assurance is guaranteed for this product line.