SPECIAL ORDER Quick view Rotary Corp Fits Gravely 18543 Muffler Rotary Corp brand aftermarket product. 1-5/16" Inlet ID, 1-1/4" Outlet ID.1-5/16" Inlet ID, 1-1/4" Outlet ID. GRAVELY 18543 GRAVELY 20259700 OREGON 35-543 PRIME LINE 7-03679 Fits 105-262 SUNBELT B1SB2286 $59.45 $53.44 Add to Cart