2003-04 Mercury Marauder headers only (no lead pipes). 1 5/8″ primary tubes with 3″ OD collectors-headers only. Long tube design makes great power and mid range torque. 3/8″ SS CNC laser cut flanges are port matched to the cylinder head for optimal flow and maximum performance. Fits up directly with Stainless Works exhaust systems P/N “MAUEX” or “MAUEX-CAT”.
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