Description
Introducing the QC4 (quad cam four valve) 860 sterndrive. Designed, developed and manufactured in-house, the naturally aspirated, 9.0 liter engine features Mercury Racing’s exclusive aluminum four-valve cylinder heads and dual overhead camshaft valve train. This proven valve train, which greatly enhances engine performance and durability over a standard two-valve design, enables the engine to produce 860 horsepower at 6800 rpm on 89 octane (Rec 90) pump fuel. The engine’s 6300-6800 rpm operating range offers unsurpassed acceleration for its power rating. The higher rev limits expand the range of propeller options available for a variety of applications.
- Naturally aspirated, 9.0 Liter engine features Mercury Racing’s exclusive aluminum four valve cylinder heads and dual overhead camshaft valve train for unsurpassed durability
- 860 horsepower at 6800 RPM on 89 octane (Rec 90) pump fuel
- 6300-6800 rpm operating range offers unsurpassed acceleration for its power rating
- Higher rev limits expand the range of propeller options available for a variety of applications
- An all-new heat exchanger maintains engine temperatures for enhanced durability
- Standard Mercury Digital Throttle & Shift (DTS) technology provides luxury-car-like drivability
- Twin 92 mm electronic throttle bodies feed the intake with runners designed to optimize torque
- Rear facing ram horn intakes direct induction noise rearward to reduce cockpit noise and enhance engine power
- All-new Mercury Racing transmission. Compact, hydraulic design delivers smooth and consistent shifts thanks to DTS technology
- Option to route exhaust outlets below water for reduced off plane noise
- A total of 12 color options available (engine, transom and drive)
- An unprecedented two years of limited factory warranty for recreational boating
