Briggs & Stratton Vanguard. 26.0 GHP, V-Twin Commercial Electric Start, Has Fuel Pump. HAS OIL COOLER AS SHOWN. 1-1/8″ x 4-19/64″, Tapped 7/16-20, 1/4 Keyway. Briggs & Stratton Vanguard Series ELECTRIC START. Cooling fin inspection panels speed debris inspection and cleaning. Increased cylinder block structure for added strength and durability. Oil Capacity 68 fl. 16A 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.