PN-460033 – 4″ 409 STAINLESS STEEL HIGH FLOW – STRAIGHT THROUGH PERFORMANCE MUFFLER. LOUVERED CORE WRAPPED IN STAINLESS MESH AND FIBERGLASS. 4″ I.D. INLET X 4″ I.D. OUTLET. 30″ OVERALL LENGTH / 24″ BODY / 7″ CASE