Description Kenworth Exhaust wye pipe with long crossover. Made from 304 stainless steel in the USA. Aftermarket replacement for OEM: M66-1214. THE BACK SIDE OF WYE HAS FULL BRIDGE REINFORCEMENT STRAP MAKING THIS A LIFETIME PART. Tube inlet size: 5″ Tube Tube outlet size: 5″ Tube Hose beaded: No Fitting sizes: None Base tube dia. 5″ Material: 304 stainless steel