You demanded more power, whether powering commercial zero-turn mowers, concrete trowels, mud boats or more. Vanguard BIG BLOCK V-Twin engines continue to prove themselves in an array of demanding applications. The 40.0 Gross HP* / 993cc EFI/ETC features electronic fuel injection and electronic throttle control delivers consistent power and fuel efficiencies. The optional Oil Guard™ System allows you to go 500-hours between oil changes; saving time and money.

•  V-Twin OHV Technology: Superior balance, low vibration, lower emissions, improved valve life, better fuel economy and higher HP/Weight.
•  Advanced Debris Management: Keeps engine clean and cool for enhanced durability and performance.
•  Dura-Bore Cast Iron Cylinder Sleeve: Withstands wear while providing improved oil control.
•  Vanguard EFI: Optimizes fuel injection and spark timing so the EFI engine delivers significant fuel savings, greater efficiency, easier starting and higher productivity.
•  Engine Warranty: Three year commercial engine warranty for all applications.
•  High Pressure Fuel Pump Module: Alcohol & Stale Fuel Resistance.
•  Electric Control Module (ECU): Allows for altitude compensation and optimized starting.
•  Service Solution: Suite of support and diagnostic tools allows for minimizing potential downtime.
•  Full Pressure Lubrication with Spin-On Oil Filter: Cleans oil and protects engine components to ensure maximum lubrication and long life.
•  Centrally Located Oil Pump and Pickup: Faster priming and allows for a higher angle of operation.