Find CUMMINS 4BTA3.9 Plant Attachments / Components you need on PowerSystemsToday! Can't find the exact CUMMINS 4BTA3.9 Engine you need? Post a free Want-To-Buy and get notified when it's available. Browse and search our easy-to-use site for a wide range of Engine and more from listing members like Diesel Sales and others. Explore new and used CUMMINS 4BTA3.9 Engine for sale near you on PowerSystemsToday!