The Gates PCV valve-to-intake emission control hose for 2002–2009 Chevrolet Trailblazer 4.2L inline-six connects the PCV valve to the intake to maintain emission and crankcase ventilation function. It helps keep PCV flow sealed to reduce vacuum leaks and related idle or emissions problems. When the original hose is cracked or leaking, install a replacement to restore proper ventilation and emission plumbing.

Gates 02-09 Chevrolet Trailblazer 6-Cyl. 4.2L PCV Valve To Intake Emission Control Hose