EMISSION SYSTEM. EMISSION COMPONENTS. 3. 5 liter. 3. 9 liter.. 2007 Buick Terraza CXL Mini Passenger Van 3.9L V6 FLEX A/T

EGR pipe. 1st Design. A Valve used to recirculate small amounts of exhaust back into the combustion chambers of the engine in order to decrease the combustion temperature, thereby reducing the formation of smog-producing nitrogen oxides. Exhaust Gas Recirculation (EGR) Tube. pipe. Exhaust Gas Recirculation () Tube.

A Valve used to Vent fuel vapors to the vapor canister. Location-Vapor Canister. Vapor Canister Purge Solenoid. Assembly - Evaporator EMIS CNSTR. Control. FUEL Tank. Vapor Canister Purge.

Assembly - Evaporator EMIS CNSTR. Control. PCV. Included with: Valve Assembly.

3.9 liter.