2025 Mercury Marine® Mercury 6.2L 300 ECT Base
- Year 2025
- Make Mercury Marine®
- Model Mercury 6.2L 300 ECT
- Engine Control system: Mechanical Shifting with Optional SmartCraft DTS / Standard SmartCraft with Electronic Throttle Control
2025 Mercury Marine® Mercury 6.2L 300 ECT Base
2025 Mercury Marine® Mercury 6.2L 300 ECT
Rethink the V-8.A 6.2-liter V-8 engine with unparalleled torque and acceleration to get you on plane quickly and smoothly.
Features may include:
Rethink the V-8.- We certainly did. Everything, part by part, system by system, with a total design and engineering commitment to marine use. The result? A 6.2-liter V-8 engine with unparalleled torque and acceleration to get you on plane quickly and smoothly. A whole new sporty feel at the wheel. Significant reductions in sound and vibration at the helm. Major improvements in the cockpit environment, by design. All wrapped in the legendary reliability you’ve come to expect from Mercury.®
- Power and acceleration is delivered with 6.2 liters of displacement and a long-runner scroll intake manifold that optimizes air flow for higher torque.
- Adaptive Speed Control maintains rpm during hard turns, creating a sportier, more intuitive driving experience without needless throttle adjustments.
- An unmatched boating experience thanks to an intake resonator and aft-facing throttle body that work together to dramatically reduce noise, while directing the engine sound away from the cockpit.
- Front and rear engine mounts isolate vibration for a smooth, quiet performance.
- Accessible, easy-to-reach, color-coded maintenance points.
Engine
Engine
Control system: Mechanical Shifting with Optional SmartCraft DTS / Standard SmartCraft with Electronic Throttle Control
Engine Power
300 HP (224 KW)
Engine Type
V8, 2-valve/cylinder pushrod
Displacement
377 CID (6.2 L)
Throttle
Max (WOT): 5000 - 5400 RPM
Oil Type
Recommended: NMMA Certified FCW 25W-40 Synthetic Blend
Bore
4.0" (101.6 mm)
Stroke
3.75" (95.25 mm)
Alternator
70 amp / 882 watt (Belt-Driven)
Cooling
Fresh water cooled available with SeaCore option/Water-cooled with thermostat
Lubrication
System: Integrated wet sump
Exhaust
Through prop
Ignition
SmartCraft PCM 112 Digital Inductive
Fuel System
Fuel System
Recommended: Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum | Delivery: Computer controlled Multi-Port Electronic Fuel Injection (MPI) | Ethanol tolerance: Up to 10% | Fuel requirement: 90 RON 10% Ethanol Maximum Unleaded Regular 87 Octane Minimum (R+M/2)
Lights and Safety
Security System
Engine guardian system: SmartCraft Engine Guardian
Dimensions
Length
32" (813 mm)
Width
30" (762 mm)
Height
22" (559 mm)
Weights
Dry Weight
Engine only: 862 lbs (391 kg)
Features
Features
Air induction: Performance-Tuned Scroll Intake Manifold | Water drain system: Air Actuated "Season Extender" (Bravo)