MerCruiser's Horizon inboards are classic performers, with proven technology that's virtually maintenance-free

• Near-universal dealer and technician training on Horizon inboard models
• Electronic multiport fuel injection affords instant startup, effortless cruising and quintessential MerCruiser reliability
• Closed-cooling technology dramatically reduces potential for corrosion, extending the life of your engine and your boating season
• Stainless steel exhaust, durable designs and simple maintenance all contribute to remarkably easy ownership

clcik image for larger view
HP/Kw @ Prop	375 / 280
Full throttle RPM	4200-4600
Cylinder Configuration	V-8
Displacement (CID / L)	502 CID / 8.2 L
Compression Ratio	8.75:1
Bore and Stroke (in / mm)	4.47 x 4.00in 113.5 x 101.6mm
Alternator Amp	65 amp / 917 watt
Cooling Systems	Brass sea water pump Closed cooling Long life 5-year antifreeze
Water Drain Systems	Single point air actuated
Recommended Oil	Mercury MerCruiser Full-Synthetic Engine Oil, 20W-40, NMMC FC-W rated
Recommended Fuel	87% octane / up to 10% ethanol
Engine Guardian System	High coolant temperature Knock control Low oil pressure Low sea water pressure Low voltage Over-rev
Fuel Injection Systems	Multi-point electronic fuel injection (EFI) Sequential Fuel Injection with Digital Throttle & Shift
Emissions Control Technology	Yes*
Boat Types	Tow Sports/Ski Boat

 

MerCruiser's Horizon inboards are classic performers, with proven technology that's virtually maintenance-free

• Near-universal dealer and technician training on Horizon inboard models
• Electronic multiport fuel injection affords instant startup, effortless cruising and quintessential MerCruiser reliability
• Closed-cooling technology dramatically reduces potential for corrosion, extending the life of your engine and your boating season
• Stainless steel exhaust, durable designs and simple maintenance all contribute to remarkably easy ownership

clcik image for larger view
HP/Kw @ Prop	425 / 317
Full throttle RPM	4400-4800
Cylinder Configuration	V-8
Displacement (CID / L)	502 CID / 8.2 L
Compression Ratio	8.75:1
Bore and Stroke (in / mm)	4.47 x 4.00in 113.5 x 101.6mm
Alternator Amp	65 amp / 917 watt
Cooling Systems	Brass sea water pump Closed cooling Long life 5-year antifreeze
Water Drain Systems	Single point air actuated
Recommended Oil	Mercury MerCruiser Full-Synthetic Engine Oil, 20W-40, NMMC FC-W rated
Recommended Fuel	87% octane / up to 10% ethanol
Engine Guardian System	High coolant temperature High exhaust manifold temperature Knock control Low drive lubricant Low oil pressure Low sea water pressure Low voltage Over-rev
Fuel Injection Systems	Multi-point electronic fuel injection (EFI) Sequential Fuel Injection with Digital Throttle & Shift
Emissions Control Technology	Yes*
Boat Types	Tow Sports/Ski Boat