350 Mag MPI Horizon (300-hp)
The 350 Mag MPI Horizon packs a lot of performance into a small-block V-8. All the maintenance-saving technology of a Horizon engine, all the craftsmanship of MerCruiser® and something you wouldn’t expect from a small-block V-8 300 horsepower.

Fast Facts

Propshaft HP	300-hp
Configuration	V-8
Displacement	5.7L / 350 CID
Bore & Stroke	4.00
Fuel System	Multi-point Electronic Fuel Injection
Base Engine Weight	948 lbs.
Length/Width/Height	43x 30x 22 in.
Max RPM@WOT	4600-5000 rpm

Key Features

• Standard Horizon features also include a roller cam valve train, high-temperature spark plug wires, stainless steel ground studs, along with a high-mounted starter and alternator.
• MerCruiser® multiport fuel injection (MPI) system features high-quality marine-specific componentry for unmatched performance and increased throttle response.
• MerCruiser® multiport fuel injection (MPI) system features high-quality marine-specific componentry for unmatched performance and increased throttle response. MPI also provides dependable turn-key st
• Platinum-tipped spark plugs for extended life and reduced routine maintenance.
• A one-piece serpentine belt means easier servicing, less maintenance, unsurpassed belt life, and requires fewer horsepower to drive the engine accessories.
• A 65-amp alternator with more power to handle additional accessories. The alternator is high on the engine block to avoid water contamination.
• MerCruiser water-cooled and insulated fuel system, which eliminates the need for a return line to the fuel tank, helps keep fuel temperatures down and greatly reduces the potential for vapor lock with
• Remote mounted oil filter places the oil filter within easy reach for simple, clean oil changes.
• Brass Sea Water pump housing improves life and better resists damage from running dry