Description 41883, 41924, 41925, 41885, 41935, 41946, 51127, 41950, 41400, 41953, 41960, 41963, 41968, 41972, 41975, 41980, 41988, 41991, 41994, 41786, 41514 Need help? Here’s a quick lesson on automotive exhaust pipe sizing: – Components such as mufflers, catalytic converters and resonators are generally measured in I.D. sizes. – Pipes such as extension pipes and tail pipes are measured in O.D. sizes. Although both part types possess the same advertised diameter, pipes are meant to slide into components.
