ATP Parts B-189 Transmission Filter Kit

Transmission Filter Kit for Ford and Mazda

ATP Parts B-189 is a premium replacement transmission filter kit built to keep transmission fluid clean and protect critical internal components. Regular filter service helps reduce debris buildup that can restrict the valve body and affect transmission operation.

Compatible With Ford Focus, Ford Transit Connect, Mazda 3, Mazda 3 Sport, Mazda 5, Mazda 6, Mazda Protege, and Mazda Protege5 applications. This ATP Parts B-189 transmission filter kit supports routine transmission service on vehicles with the specified FN4A-EL fitment.

Key Features

• Transmission filter kit for service maintenance
• Helps keep transmission fluid cleaner by capturing wear debris
• Supports valve body and internal transmission component protection
• Premium Replacement line from ATP Parts
• Cross-references Monroe Shocks & Struts 58617 for the same application

Detailed Description

The ATP Parts Premium Replacement line focuses on direct-fit service parts for common maintenance needs. Part number B-189 is a transmission filter kit for vehicles that require regular fluid filtration to maintain clean hydraulic flow inside the transmission. It is a practical choice for Ford Focus and Ford Transit Connect models, as well as Mazda 3, Mazda 5, Mazda 6, Protege, and Protege5 applications listed below.

Fits 2010-2013 Ford Transit Connect, N/A. Fits 2000-2011 Ford Focus, N/A. Fits 2004-2009 Mazda 3, N/A, only fits FN4A-EL. Fits 2009 Mazda 3 Sport, N/A. Fits 2006-2007 Mazda 5, N/A, only fits FN4A-EL. Fits 2003-2006 Mazda 6, N/A, only fits FN4A-EL. Fits 2004 Ford Focus, N/A, from 04/09/2003. Fits 1999-2003 Mazda Protege, N/A. Fits 2002-2003 Mazda Protege5, N/A.

Common Problems This Part Helps Address

• Dirty transmission fluid from normal wear debris
• Restricted fluid flow through the valve body
• Clogged internal transmission passages
• Service-related transmission performance concerns
• Premature wear caused by contaminated fluid

Installation Notes and Tips

Verify transmission type before ordering, especially on Mazda 3, Mazda 5, and Mazda 6 applications that require FN4A-EL fitment. Match the vehicle year and model exactly to the listed applications, and inspect the pan, gasket surfaces, and fluid condition during service. Use the part number B-189 and the vehicle fitment details to confirm application before installation.

Quality Assurance

ATP Parts positions this filter kit in its Premium Replacement line for service-focused transmission maintenance. The design centers on keeping transmission fluid clean so the transmission can operate with less contamination-related wear.