NIMTEK New Carburetor Carb for Tecumseh 640017B 640117 640117B OHH45 OHH50 Carb & Gasket NIMTEK High Quality Aftermarket Carburetor. Fits Parts Model: TECUMSEH 5.5HP 6HP 6.5HP OHH Engines . Replace Tecumseh 640017B 640117 640117B Yerf Dog 3203 3205 3208 40093 This carburetor comes with gasket.