Volvo Penta V6-280A-C Aquamatic SX Single-Prop Sterndrive Package

Description

Eliminate slow ski boat hole shots with Volvo Penta V6-280A-C SX Package systems, designed to power performance runabouts, ski boats, and bowriders up to 26 feet. Displacing 4.3 liters across six V-configured cylinders, this naturally aspirated gasoline engine produces 280 horsepower at 5,800 RPM. Direct fuel injection and variable valve timing ensure crisp acceleration, clean exhaust, and high fuel economy.

High-strength cast aluminum forms the deep-skirt cylinder block and cylinder heads, utilizing cast iron cylinder liners to reduce total engine weight. A closed fresh water cooling system integrates an aluminum heat exchanger, exhaust manifold cooling jackets, and bronze sea water pump. Dry package weight with SX sterndrive is 968 lbs, supported by an engine bay envelope matching standard 22.5-inch stringers and quick-connect fuel fittings.

Key Features of Volvo Penta V6-280A-C SX

Sport boat owners buy Volvo Penta V6-280A-C SX inboard engine packages to replace aging carbureted sterndrives with clean direct-injection technology. The paired SX single-propeller drive features a hydrodynamic lower gearcase to reduce underwater drag while delivering dependable high-speed performance across calm lakes and coastal bays.

• 280 horsepower rating propels sport boats past 48 knots with exceptional throttle response.
• Common-rail direct fuel injection operates at 150 bar to extract maximum energy from regular gasoline.
• Variable valve timing optimizes camshaft phasing for strong low-end acceleration and high-RPM cruising.
• Fresh water cooling isolates block passages from raw lake or saltwater corrosion.
• Hydrodynamic SX single-propeller drive reduces drag for higher top speed and simple prop selection.
• Volvo Penta V6-280A-C SX efficiency reduces fuel consumption during water sports tow runs.
• Wide-band oxygen sensors adjust air-fuel mixtures in real time across elevation changes.
• Easy drain winterization system empties raw water passages with a single manual hand valve.

Combustion Dynamics Thermal Capacities

Dual thermostats regulate internal coolant temperatures between 160°F and 175°F under continuous planing operations. The V6 block develops 310 lb-ft of torque at 4,000 RPM, giving sport boats fast acceleration for towing water skiers and wakeboarders. Operating under recreational marine duty cycles, thermal heat rejection transfers 95 kW into raw sea water circuits. Specific fuel consumption averages 265 g/kWh, burning about 5.85 gallons per hour at standard cruising speeds under loaded displacement conditions.

Exhaust Integration Bay Clearances

Water-jacketed aluminum exhaust manifolds route exhaust gases through the transom plate and propeller hub, meeting ABYC P-1 standards. Engine bearer brackets align with 22.5-inch stringer beds, preserving 2.5 inches of clearance below the cast aluminum oil pan. Flexible rubber shear mounts isolate reciprocating vibration from fiberglass hulls.

Service Schedules Application Constraints

Mechanical push-pull or electronic control cables link helm levers straight to throttle bodies without mechanical binding. Operators check drive trim fluid levels, inspect drive bellows, and verify sea water strainers prior to departure. This gasoline sterndrive package is not engineered for heavy commercial tugs, displacement passenger barges, or unvented engine spaces lacking USCG approved bilge blowers.

• Inspect drive bellows and fluid levels before each shift.
• Inspect and clean sterndrive sacrificial zincs every 100 hours.
• Change engine oil, sterndrive gear lube, and filters every 100 hours.

Warranty Terms Package Manifest

Recreational buyers receive 2-Year limited warranty protection on base castings and sterndrive gear components. The shipping crate contains the V6 gasoline engine, Aquamatic SX sterndrive, transom shield module, complete power trim pump, and bound factory technical service manual.