Review on 🔇 Walker Exhaust Quiet-Flow 21539 Performance Exhaust Muffler by Patrick Cox

Muffler is a perfect match for my 163" XLT 2004 WB with seven bolt holes F150. The rear hanger needs to be flipped back and then forward to connect the 2-in-1 pressure pipe .High temp antiseptic was used on each spline and clamps as the old system had to be disconnected.I bought a Walker exhaust which also fits perfectly.As with the muffler I used ANtiseez high temp grease for the keyed connection to the muffler. Spray high temp paint on the muffler inlet/outlet flanges and hanging areas to make them rot first, not bad for aftermarket parts.