P028-04 Repair Kit, 2.710" Dia. x .016" Diaphragm, "Zero Series" Horns (2003-2011) Including (1) P028-04 Diaphragm, (1) P321-08 2-3/8" O-Ring and (1) P321-09 3/16" O-Ring. One diaphragm kit per horn body, items 4,5, and 10 per Drawing 3-6240

P028-04 Repair Kit, 2.710" Dia. x .016" Diaphragm, #0 Horns (2003-2011) Including (1) P028-04 Diaphragm, (1) P321-08 2-3/8" O-Ring and (1) P321-09 3/16" O-Ring. One diaphragm kit per horn body, items 4,5, and 10 per Drawing 3-6240.

Note:  For 2003-2011 Kahlenberg S-0A, D-0A, T-0A Air Horns.   This kit is correct for your air horn if you have 1 bronze diaphragm, 1 large O-Ring, and 1 small O-Ring in the horn sounding body.   If you have two large O-Rings, see P028-25 Repair Kit.