ATP Parts B-230 Transmission Filter Kit

Transmission Filter Kit for GM 4L60E Applications

ATP Parts B-230 is a Premium Replacement transmission filter kit built to help keep transmission fluid clean and protect internal components from wear-related debris. For Chevrolet Colorado, GMC Canyon, Hummer H3, Hummer H3T, and Isuzu i-350/i-370 applications with a stepped pan, this kit supports routine transmission service on 2004-2012 vehicles.

The ATP Premium Replacement line focuses on direct-fit service parts for maintenance work where correct fitment and dependable sealing matter. This B-230 transmission filter kit is a practical choice for drivers servicing a stepped-pan transmission and looking to restore proper fluid filtration during a pan drop service.

• Transmission filter kit for stepped pan applications
• Helps keep transmission fluid cleaner by trapping debris from normal wear
• Supports valve body and internal component protection
• Fits Chevrolet Colorado and GMC Canyon stepped-pan applications
• Also fits Hummer H3, Hummer H3T, Isuzu i-350, and Isuzu i-370 listings
• ATP Parts B-230 Premium Replacement service kit

Detailed Product Information

ATP Transmission filters are engineered to keep transmission fluid clean as the unit accumulates wear particles over time. When debris builds up, it can restrict fluid flow and contribute to clogged passages in the valve body and other critical transmission components. Regular filter replacement during service helps maintain cleaner fluid circulation and supports longer transmission life. This ATP Parts B-230 transmission filter kit is listed for stepped pan applications and is a direct-fit service part for the vehicles shown below.

This part cross-references Wix 58323 and Baldwin 20020 for the same application. The ATP B-230 part number is also commonly searched by technicians and DIY owners servicing GM and Isuzu trucks and SUVs with the correct stepped pan configuration.

What This Part Helps Address

• Dirty transmission fluid from normal wear and debris
• Restricted fluid flow through a clogged filter
• Valve body contamination that can affect shifting performance
• Premature wear caused by neglected transmission service
• Service needs on stepped-pan transmission applications

Installation Notes and Tips

Verify the transmission pan style before ordering, since this kit is listed for stepped pan applications only. Match the vehicle year, make, and model to the fitment data and confirm the transmission configuration during service. Clean the pan and mating surfaces thoroughly before reassembly, and follow the vehicle manufacturer’s service procedure for fluid level checks after installation.

• Fits 2004-2012 Chevrolet Colorado, N/A
• Fits 2004-2012 GMC Canyon, N/A
• Fits 2006-2010 Hummer H3, N/A
• Fits 2009-2010 Hummer H3T, N/A
• Fits 2007-2008 Isuzu i-370, N/A
• Fits 2006 Isuzu i-350, N/A

Quality Assurance

ATP Parts Premium Replacement components are built for service applications where accurate fitment and clean fluid control are important. The B-230 transmission filter kit is designed for the listed stepped-pan vehicles and follows ATP’s replacement-part focus for routine transmission maintenance.