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MerCruiser

4.5L

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.

4.5L 200hp ECT

HP / kW :

200 / 149

​

Maximum RPM (WOT) :

4400-4800

​

Engine type :

V6, 2-valve/cylinder pushrod

​

Displacement (L) :

4.5

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Bore and stroke :

4.0 x 3.6" / 102 x 92 mm

​

Recommended fuel :

Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum

​

Fuel ethanol tolerance :

Up to 10%

​

Fuel requirement :

90 RON 10% Ethanol Maximum
Unleaded Regular 87 Octane Minimum (R+M/2)

​

Engine control system :

Mechanical Shifting with Optional SmartCraft DTS
Standard SmartCraft with Electronic Throttle Control

​

Fuel delivery system :

Computer controlled Multi-Port Electronic Fuel Injection (MPI)

​

Air induction :

Performance-Tuned Scroll Intake Manifold

​

Ignition :

SmartCraft PCM 112 Digital Inductive

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Alternator amp / Watt :

70 amp / 882 watt (Belt-Driven)

​

Water drain system :

Easy Drain "Season Extender"

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Exhaust system :

Through prop

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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

​

Engine guardian system :

SmartCraft Engine Guardian

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Dimensions (L x W x H) :

28 x 30 x 22" / 696 x 740 x 559 mm

​

Weight (engine only) :

761 lbs / 345 kg

​

Compatible drives :

Alpha

4.5L 250 ECT

HP / kW :

250 / 186

​

Maximum RPM (WOT) :

4800-5200

​

Engine type :

V6, 2-valve/cylinder pushrod

​

Displacement (L) :

4.5

​

Displacement (CID/L) :

275 / 4.5

​

Bore and stroke :

4.0 x 3.6" / 102 x 92 mm

​

Recommended fuel :

Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum

​

Fuel ethanol tolerance :

Up to 10%

​

Fuel requirement :

90 RON 10% Ethanol Maximum
Unleaded Regular 87 Octane Minimum (R+M/2)

​

Engine control system :

Mechanical Shifting with Optional SmartCraft DTS
Standard SmartCraft with Electronic Throttle Control

​

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 :

Air Actuated "Season Extender" (Bravo)
Easy Drain "Season Extender" (Alpha)

​

Exhaust system :

Through prop

​

Cooling system :

Water cooled with thermostat; FWC available as factory option (Alpha) and packaged with SeaCore Drive (Bravo)

​

Lubrication system :

Integrated wet sump

​

Recommended oilNMMA Certified FCW 25W-40 Synthetic Blend

​

Engine guardian system :

SmartCraft Engine Guardian

​

Dimensions (L x W x H) :

28 x 30 x 22" / 696 x 740 x 559 mm

​

Weight (engine only) :

761 lbs / 345 kg

​

Compatible drives :

Alpha
Bravo One
Bravo Three
Bravo Two

4.5L 200hp ECT
4.5L 250 ECT
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