Wix W74B191 Diesel Exhaust Fluid (DEF) Urea Filter - In-Tank

Wix W74B191 Diesel Exhaust Fluid Filter

The Wix W74B191 is a Diesel Exhaust Fluid (DEF) urea filter for emission control service. It is built for diesel exhaust fluid filtration needs where clean DEF flow is important to aftertreatment system performance.

Key Features

• Diesel Exhaust Fluid (DEF) urea filter for emission control applications
• Wix part number W74B191 for direct catalog identification
• Supports DEF filtration service in diesel aftertreatment systems
• Relevant for diesel vehicle maintenance searches such as DEF filter replacement and urea filter service

Product Details

Wix W74B191 is an emission control filter designed for diesel exhaust fluid service. In diesel applications, the DEF filter helps maintain cleaner fluid delivery to the SCR system, which is important when servicing DEF-related contamination concerns. For buyers searching Wix W74B191, DEF urea filter, or diesel exhaust fluid filter replacement, this part provides a straightforward catalog match for emission control maintenance.

What It Is Used For

• Replacing a clogged DEF filter
• Addressing restricted DEF flow in the emission system
• Servicing diesel exhaust fluid contamination concerns
• Supporting maintenance of SCR and aftertreatment components

Installation Notes

Verify the filter location and service procedure against the vehicle’s emission system layout before installation. Clean the surrounding area before opening the DEF circuit to reduce contamination risk. Confirm the part number W74B191 against the existing filter reference before ordering.

Quality Assurance

Wix is a recognized filtration brand in automotive and diesel service parts. This part cross-references no listed alternate part numbers in the provided data.