LONCIN ORIGINAL LONCIN engine exhaust muffler gasket for lawn tractor mower mowers models: 413 cc 432 cc and 452 cc and for our model ST 7750 EXHAUST COLLECTOR CODE: 300118 SILENCER EXHAUST COLLECTOR FULL CODE: 300048 For models: LONCIN 452 ST7750 LC 1P92 F-1 Code: 55800196 Original Code: 180650074-0001 1806500740001 180650074 ah m