MerCruiser 4.5L 250 HP MPI Alpha V6 Marine Engine

A MerCruiser 4.5L V6 marine engine for Alpha drives, rated 250 HP (184 kW) at 4,800-5,200 RPM with multi-port fuel injection. It weighs 343 kg and its ECM is compatible with SmartCraft digital displays, gauges and monitoring.

The V6 has a 4.00 x 3.6 in (102 x 92 mm) bore and stroke and measures 696 x 740 x 559 mm (L x W x H). Cooling is raw water, the exhaust is built from corrosion-resistant materials, and the engine runs on 87 octane fuel. It is intended as a compact repower for older MerCruiser inboard motors and suits sport boats, cruisers and small to mid-sized powerboats.

Highlights

• 4.5L V6, 250 HP (184 kW) at 4,800-5,200 RPM

• Multi-port fuel injection

• ECM with SmartCraft compatibility

• 343 kg engine weight

• Runs on 87 octane fuel

Specifications

Good to know

• Installation, rigging and commissioning by a qualified marine technician are recommended; follow the manufacturer's pre-delivery and break-in procedures.