Description
Flowmaster FlowFX Dual Exit Cat Back Exhaust System For 2019 2021 GM 1500 5.3L 2003 2007 6 0l powerstroke 2003 Mercury Mountaineer 4 BKFX UC2196L G1 up pipes Year:2019+ Perrin 17 19 Honda 2003 Mercury Mountaineer 4 Stock injector trucks with a built transmission can expect an easy 100+ RWHP gain with no adjustment to tuning required