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The Gates molded upper coolant hose for 2002–2009 Chevrolet Trailblazer 4.2L 6-cylinder is a replacement upper hose formed to match the factory routing on those Trailblazer models. It restores correct upper coolant flow for the 4.2L inline-six engine. Replace the upper hose when it shows cracking, swelling, or leaks; verify vehicle year and engine size to confirm this molded hose is the right part.
Gates 02-09 Chevrolet Trailblazer 6-Cyl. 4.2L Upper Molded Coolant Hose