Briggs & Stratton Vanguard. 36.0 GHP, V-Twin Commercial Electric Start, Has Fuel Pump. HAS OIL COOLER AS SHOWN. 1-1/8″ x 4-1/2″, Tapped 7/16-20, 1/4 Keyway. Briggs & Stratton Vanguard Series ELECTRIC START. Dura-Bore® cast iron cylinder sleeve for extended life. Float feed type carburetor with integral fuel pump for remote. Cyclonic air filter provides ultimate debris protection and lasts 2X. Longer than panel-style air cleaner systems. Bore 3.42 in. Stroke 3.46 in. Oil Capacity 82 fl. 20A Alternator w Regulator. MUFFLER IS NOT INCLUDED. Briggs and Stratton Dealer. Please inquire if you are not sure if this model will fit your Application.