End cover insulation for p/n C29288 mufflers used on '86 to '88 model 226/446/448 tractors. You can re-insulate/re-wrap a solid or repaired inner muffler for much less than replacing it. Note, also used on the earlier '84-1/2 to '85 tractors with C26974 mufflers that have the #2 pipe entering the side as well as the C26063 Kohler muffler. These are the ones with 1-1/8" inlets. Replaces p/n C22860.