Wix 33558 Fuel Filter

WIX 33558 Fuel Filter for Subaru and Saab

The WIX 33558 fuel filter is built for Subaru and Saab applications that need dependable fuel system protection in everyday driving. With 17-micron cellulose media and 8 mm inlet and outlet connections, it supports clean fuel delivery for vehicles used in stop-and-go traffic, short trips, dirt roads, and highway travel.

• Fits 1990-2004 Subaru Legacy, N/A
• Fits 1993-2005 Subaru Impreza, N/A
• Fits 1998-2004 Subaru Forester, N/A
• Fits 2000-2004 Subaru Outback, N/A
• Fits 2003-2004 Subaru Baja, N/A
• Fits 2005-2006 Saab 9-2X, N/A
• Fits 2014 Subaru Outback, N/A
• Fits 2014-2015 Subaru Legacy, N/A
• Fits 2016-2022 Subaru Crosstrek, N/A

Key Features

• Part number 33558 fuel filter for in-line fuel filtration
• 17.00 micron cellulose media for fine particle capture
• 8 mm inlet and 8 mm outlet connections
• Closed top design with 3.346 outer diameter top and 4.724 height
• Built for light-duty use across normal and severe driving conditions
• Recommended for OEM fuel filter change intervals

Detailed Description

WIX 33558 is a complete in-line fuel filter engineered for consistent filtration performance across a wide range of Subaru models, including Legacy, Impreza, Forester, Outback, Baja, and Crosstrek, plus the Saab 9-2X. The filter uses cellulose media and a 17-micron rating to help trap contaminants before they reach sensitive fuel system components. WIX specifies this filter for applications that call for an 8 mm inlet and outlet, making it a direct service part for many OE-style fuel filter replacements. This part cross-references Subaru 42072AA120 and NAPA Gold Filters 3558 for the same application.

What It Helps Address

• Fuel contamination entering injectors and fuel system components
• Restricted fuel flow caused by a loaded or aging filter
• Rough running related to dirty fuel delivery
• Service intervals that call for routine fuel filter replacement
• Daily driving exposure to dust, debris, and stop-and-go conditions

Installation Notes and Tips

Confirm the vehicle uses 8 mm inlet and outlet connections before installation. Match the filter orientation to the fuel line routing and replace the filter at the interval specified for the vehicle. For Subaru Legacy, Impreza, Forester, Outback, Baja, Crosstrek, and Saab 9-2X applications, verify the OE part number 42072AA120 when cross-checking the service part.

Quality Assurance

WIX fuel filters are built with application-specific media, materials, and construction to support reliable filtration under normal and severe driving conditions. The 33558 is intended for OEM fuel filter change intervals and is manufactured to deliver consistent performance across the listed fitments.