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Mercruiser Sterndrive 3.0L MPI

Mercruiser Sterndrive 3.0L MPI – MERCRUISER MULTIPORT INJECTED (MPI) STERNDRIVE ENGINES are built to exceed your expectations with impressive technologies that give you instant peace of mind.

HP/kW @ Prop 135/101
Max RPM (WOT) 4400-4800
Cylinders I4
Displacement (CID/L) 181/3.0
Bore & Stroke (in/mm) 4.00×3.60/101×91
Compression Ratio 9.3:1
Fuel Requirements Unleaded regular 87 octane
Engine Control System PCM 09 w/SmartCraft CAN Capability, OBD-M Diagnostics, (2) O2 Sensors
Fuel Delivery System Dual Pump Water-Cooled Module with Water Separating Fuel Filter
Fuel Injection System Multi-Port Electronic Fuel Injection
Induction System Single piece iron intake-exhaust manifold w/56mm throttle body
Ignition System Distributorless ignition with knock control
Charging System 65 amp/917 watt alternator
Water Drain System Quick-Disconnect Drain Hoses with Flush Feature
Exhaust System EDP coated iron manifold w/ dry-joint elbow
Cooling System Thermostatically controlled, raw water
Accessory Drive System V-Belt
Recommended Engine Oil MerCruiser Full Synthetic Engine Oil – SAE 20W-40
Engine Guardian System Low Oil Pressure, High Coolant Temperature, Low Seawater Pressure, Low Drive Lubricant, Low Voltage, Over-Rev Control
Alpha Ratios 2.0(P), 2.40
Bravo One Ratios N/A
Bravo Two Ratios N/A
Bravo Three Ratios N/A
Weight w/Alpha (lbs/kg) 695/315
Weight w/Bravo One (kg) N/A
Weight w/Bravo Two (kg) N/A
Weight w/Bravo Three (kg) N/A
Optional Freshwater Cooling Available
Digital Throttle & Shift N/A


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