Mercruiser Sterndrive 4.5L MPI 200 HP

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The Next Generation featuring a host of engineering innovations. The 4.5L series establishes new standards for power-to-weight ratio, driver experience, acceleration, durability, and ease of maintenance. A new V6 engine that delivers V8 performance in a compact lightweight package.

Built for Marine

Designing a V-6 block solely for marine use allows Mercury to build the 4.5L with the ultimate protection system, using cast-iron componentry where the engine intersects with seawater, and using corrosion-resistant aluminum and composites everywhere else.

Corrosion Protection

The MercFusion Paint System creates an outer seal against the elements, while MerCathode® provides automatic protection against galvanic corrosion. For maximum defense against saltwater effects, the SeaCore® industrial hardcoat anodizing system and closed-cooling circuit is available with the Bravo® drive.

Sporty Handling

The 4.5L comes standard with Adaptive Speed Control, which automatically maintains engine rpm regardless of load or water conditions. The result is increased throttle response and a sporty feel.

Powerful Performer

Thanks to its new, long-runner scroll intake manifold which draws in more air and converts it into additional torque, the 4.5L delivers a ground-breaking power-to-weight ratio and gives you V-8 power in a V-6 package.

Smooth & Quiet

The 4.5L’s newly designed rear-facing throttle body, anti-whistle throttle plate, engine cover and mounts, lightweight flywheel, fuel-supply module, and structural oil pan all work together to deliver a superior idle, smoothness and low vibration. Resulting in an exceptional driving experience.

Price POA
Price Base POA
Brand Mercruiser
Model 4.5L MPI 200 HP (Sterndrive)
Length 0.00 Meters
Year 2018
Hull Type Other
Hull Style Other
Engine Make Mercruiser
Engine Type 4.5L MPI 200 HP (Sterndrive)
Condition New
HP / kW 200 / 149
Maximum RPM (WOT) 4400 – 4800
Engine type V6, 2-valve/cylinder pushrod
Displacement (L) 4.5
Bore and stroke 4.0 x 3.6″ / 102 x 92 mm
Fuel requirement Unleaded 91 RON Minimum
Fuel delivery system Computer controlled Multi-Port Electronic Fuel Injection (MPI)
Air induction Performance-Tuned Scroll Intake Manifold
Ignition SmartCraft PCM 112 Digital Inductive
Alternator amp / Watt 70 amp / 882 watt (Belt-Driven)
Water drain system Easy Drain “Season Extender”
Exhaust system Through prop
Cooling system Water cooled with thermostat; FWC available as factory option
Lubrication system Integrated wet sump
Recommended oil NMMA Certified FCW 25W-40 Synthetic Blend
Dimensions (L x W x H) 28 x 30 x 22″ / 696 x 740 x 559 mm
Weight (engine only) 756 lbs / 343 kg
Compatible drives Alpha
Horse Power 200
Fuel Type Petrol
Drive Type Sterndrive


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