ATP Parts B-203 Transmission Filter Kit

Transmission Filter Kit for Heavy-Duty GM Trucks

ATP Parts B-203 is a Premium Replacement transmission filter kit built for GM heavy-duty truck applications. It helps keep transmission fluid cleaner so the valve body and other internal components stay free of debris from normal wear.

Fits 2001-2010 Chevrolet Silverado 2500 HD, N/A; Fits 2007-2010 Chevrolet Silverado 3500 HD, N/A; Fits 2001-2006 Chevrolet Silverado 3500, N/A; Fits 2007 Chevrolet Silverado 3500 Classic, N/A; Fits 2001-2005 GMC Sierra 2500 HD, N/A; Fits 2006 GMC Sierra 2500 HD, N/A; Fits 2007-2010 GMC Sierra 2500 HD, N/A; Fits 2001-2005 GMC Sierra 3500, N/A; Fits 2006 GMC Sierra 3500, N/A; Fits 2007-2010 GMC Sierra 3500, N/A; Fits 2007 GMC Sierra 3500 Classic, N/A.

Key Features

• Transmission filter kit for service on GM truck transmissions
• Premium Replacement line from ATP Parts
• Helps maintain cleaner transmission fluid during routine maintenance
• Designed for sump filter and gasket applications with deep pan bottom fitment
• Length: 4 7/8 in. for listed applications
• Fits Chevrolet Silverado 2500 HD, Silverado 3500 HD, Silverado 3500, and Silverado 3500 Classic applications
• Fits GMC Sierra 2500 HD, Sierra 3500, and Sierra 3500 Classic applications

Why This Filter Kit Matters

Transmission fluid carries wear debris over time, and a clogged filter can restrict flow to critical hydraulic passages. Replacing the filter during service helps keep the fluid path cleaner and supports proper operation of the valve body and related transmission components. ATP Parts B-203 is a practical choice for Silverado and Sierra owners servicing deep-pan GM truck transmissions.

This part cross-references Hastings TF196 and Baldwin 20003 for the same application.

Common Problems It Can Help Address

• Restricted transmission fluid flow caused by a dirty filter
• Debris buildup from normal transmission wear
• Service intervals that call for a new sump filter and gasket
• Maintenance on deep pan GM truck transmission setups
• Reduced protection for valve body and internal hydraulic components

Installation Notes and Tips

Verify the transmission pan style and filter length before installation. This kit is listed for deep pan bottom applications with a sump filter and gasket configuration, including some vehicles with reusable gasket notes. Clean the pan and mating surfaces thoroughly during service, and confirm the replacement matches the vehicle’s transmission setup before reassembly.

Quality Assurance

ATP Parts Premium Replacement components are built for routine service applications where clean transmission fluid is essential to transmission life. Regular filter replacement can reduce the chance of avoidable repairs caused by contamination and flow restriction.