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MERCURY
300 Racing V8

Lighter than its competition yet built to withstand the rigors of saltwater operation. For go-fast boats and commercial offshore operations that operate in rough seas or need more speed. Great for deck, inflatable rigid hull, inshore fishing, multi-species fishing, offshore fishing, and runabout cuddy boats, and tritoons.

HP / kW350 / 257
Engine typeInline 6
MidSectionAdvanced MidSection (AMS)
Displacement (CID/CC)158.5 / 2600
Displacement (L)2.6
Cylinder ConfigurationInline 6 with Dual Overhead Cam [DOHC] and 24-valves
Full throttle RPM5800-6400
Air inductionSupercharged with charge air cooling and electronic boost pressure control
Fuel induction systemSequential multi-port electronic fuel injection (EFI)
Alternator amp / Watt70 amp / 882 watt (Belt-Driven)
Recommended fuelUnleaded Regular 89 Octane Minimum (R+M)/2 or 93 RON Unleaded 91 Octane or 95 RON for premium performance in all conditions 10% Ethanol Maximum
Recommended oilMercury FourStroke 25W40 Marine Oil
Engine protection operator warning systemSmartCraft Engine Guardian
Compatible with SmartCraft digital technologyYes
StartingElectric Start with SmartStart Protection
ControlsDigital Throttle & Shift (DTS)
SteeringElectro-hydraulic power steering
Joystick Piloting for Outboards
Shaft length20" / 508 mm
25" / 635 mm
30" / 762 mm
Gearcase ratio1.75:1
Dry weight *Lightest model available668 lbs / 303 kg
CARB star rating2
Bore and stroke3.23 in x 3.23 in / 82 mm x 82 mm
IgnitionSmartCraft Digital Inductive
Cooling systemWater-cooled with thermostat & pressure-controlled
Gear shiftSmartCraft DTS F-N-R
Gearcase options5.44"
Trim systemPower trim and tilt with SmartCraft programmable tilt
Trim positionsElectric Hydraulic Power Steering
Exhaust systemThrough prop
Counter RotationAvailable
ColorCold Fusion White
Phantom Black
Warm Fusion White
Oil Capacity8.5 Quarts / 8.0 Liters