ATP Parts B-404 Transmission Filter Kit

Transmission Filter Kit for Mazda, Ford, Lincoln, and Mercury

ATP Parts B-404 is a premium replacement transmission filter kit built to keep transmission fluid cleaner as normal wear creates debris inside the unit. Clean fluid helps protect the valve body and other critical internal components from clogging, which can reduce drivability problems and avoid preventable transmission repairs.

Designed for a wide range of Mazda 3, Mazda 5, Mazda 6, Mazda 2, Mazda CX-7, Ford Fusion, Lincoln MKZ, Lincoln Zephyr, and Mercury Milan applications, this ATP Parts B-404 transmission filter kit supports routine service on vehicles that rely on clean automatic transmission fluid for proper operation.

Key Features

• Premium replacement transmission filter kit from ATP Parts
• Helps keep transmission fluid clean during regular service intervals
• Supports protection of the valve body and other internal transmission components
• Built for service on select Mazda, Ford, Lincoln, and Mercury vehicles
• Cross-references ATP B-404 for the same application

Detailed Description

ATP Parts Premium Replacement B-404 is a transmission filter kit made for routine automatic transmission maintenance. Over time, normal wear produces debris that circulates through the fluid and can collect in sensitive passages. Replacing the filter at service time helps maintain cleaner fluid flow through the transmission and supports long-term reliability. This part is a direct service solution for applications including 2006-2009 Ford Fusion, 2007-2009 Lincoln MKZ, 2006-2009 Mercury Milan, and multiple Mazda platforms such as the Mazda 3, Mazda 5, Mazda 6, Mazda 2, and CX-7.

Compatible vehicle coverage includes Fits 2015 Mazda 5, W/ Pan; Premium Replacement, Fits 2011-2014 Mazda 2, Premium Replacement, Fits 2012-2014 Mazda 5, Premium Replacement, Fits 2008-2010 Mazda 5, Premium Replacement, Fits 2010-2013 Mazda 3, Premium Replacement, Fits 2006-2007 Mazda 3, Premium Replacement, Fits 2009-2013 Mazda 3 Sport, Premium Replacement, Fits 2008-2013 Mazda 6, Premium Replacement, Fits 2010-2012 Mazda CX-7, Premium Replacement, Fits 2006-2009 Ford Fusion, Premium Replacement, Fits 2007-2009 Lincoln MKZ, Premium Replacement, Fits 2006-2009 Mercury Milan, Premium Replacement, Fits 2008 Mazda 3, To 12/05/2008; Premium Replacement, Fits 2006-2007 Mazda 6, Only Fits FS5A-EL; Premium Replacement, and Fits 2006 Lincoln Zephyr, Premium Replacement.

What It Helps Address

• Dirty or contaminated transmission fluid
• Debris buildup that can restrict internal fluid passages
• Valve body clogging that can affect transmission operation
• Service-related transmission performance concerns
• Wear-related maintenance needs on higher-mileage automatic transmissions

Installation Notes and Tips

Verify transmission type and service configuration before ordering, especially on Mazda 6 applications that note FS5A-EL and the 2015 Mazda 5 application that notes use with pan. Match the vehicle year, make, model, and notes exactly to the listing before installation. Clean the transmission pan and surrounding service area during filter replacement to help maintain fluid cleanliness after service.

Quality Assurance

ATP Parts Premium Replacement components are built for service-focused repair work and are backed by the brand’s replacement-part positioning for everyday maintenance applications.