Walker (670) 21146 Walker Heavy Duty Universal Muffler/Resonator. Inlet ID 3", Outlet ID 3". Overall Length 20".

Walker® offers hundreds of muffler designs and styles to fit virtually any hard-working on/off road commercial vehicle. Walker is a "one-stop" convenience, offering complete engine-to-tailpipe coverage of replacement emissions control systems and components for popular domestic, import and commercial vehicle applications.