Wix 49158 Air Filter

WIX 49158 Engine Air Filter Overview

The WIX 49158 engine air filter is a panel-style replacement built for normal and severe driving conditions, including stop-and-go traffic, dirt roads, construction zones, short trips, and highway use. It is a direct-fit air filter for select Cadillac SRX and Saab 9-4X applications, with OE-style dimensions and filtration media engineered for dependable engine protection.

• Panel-style engine air filter for select GM and Saab applications
• Enhanced cellulose media with phenolic resin treatment for moisture resistance
• Contains more media than comparable OES filters for increased filtration surface area
• High-tear strength polyurethane seal on applicable designs for temperature durability
• Laboratory tested to ISO 5011 standards with at least 99.5% efficiency based on Wix 42389
• Direct replacement part number 49158 for routine air filter service

Fitment and Application Details

Compatible with 2010-2013 Cadillac SRX and 2011 Cadillac SRX, plus 2011 Saab 9-4X. This WIX 49158 air filter is also a direct OE-style replacement for vehicles originally using General Motors part number 20897358. If you are searching for a Cadillac SRX engine air filter or a Saab 9-4X replacement air filter, this part number 49158 is the application to verify.

This part cross-references FRAM CA10867 and NAPA Gold Filters 9158 for the same application.

What This Air Filter Helps Address

• Restricted airflow caused by a dirty or loaded engine air filter
• Dust and debris entering the intake system during road and construction exposure
• Moisture-related media breakdown in demanding weather conditions
• Reduced filtration performance during stop-and-go or short-trip driving
• Service intervals that call for an OE replacement air filter

Installation Notes and Quality Assurance

Install the filter in the factory air box and confirm the seal seats evenly around the perimeter before closing the housing. Inspect the air cleaner housing for dirt, leaves, or debris before installation so the new filter can perform as intended. Verify vehicle application by year, make, model, and original equipment part number before ordering.

WIX builds this filter with enhanced cellulose media and application-specific sealing materials to support consistent filtration performance. The product is backed by WIX manufacturing quality standards; no separate warranty information was provided in the source data.