Muffler / Briggs & Stratton 393232SPack Size:1Briggs & Stratton 393232, Briggs & Stratton 393232SEdgewater 430765, ESF 157-059, Foley/PLP 157-059, Green Meadow BM128, Laser L3042, Laser 94070, NHC 267-1200, Prime Line 7-03662, Rotary 859, Sunbelt SB-859, Sunbelt B1SB859Briggs & Stratton 326400; for 11 and 16 HP horizontal cast iron engines Painted finish, OD: 4 1/4 ", Length: 11 " OVERALL, Pipe Thread: 1 ", 7 3/4" external pipe length