Mercury 350CXL 350HP Outboard – 25in Shaft, Counter Rotation, DTS

Description

Install the counter-rotating, 25-inch Mercury 350CXL to eliminate port-side hull listing on twin-engine offshore setups. The massive 5.7-liter V10 block delivers instant throttle translation, pushing heavy center consoles through steep morning swells. Verifying your exact transom height guarantees this counter rotating mercury outboard motor aligns correctly with your standard starboard engine.

Eliminate severe engine vibration that ruins passenger comfort by relying on the Advanced MidSection to isolate the powerhead completely. Heavy-duty elastomer mounts trap all mechanical shaking before it reaches the hull. Mercury casts the 316 kg gearcase using specialized low-copper alloys. This physical barrier stops rapid metal degradation when repowering twin engine offshore boats in high-salinity environments.

Key Features of Mercury 350CXL

• Advanced MidSection (AMS): Isolates the powerhead using heavy-duty elastomer mounts, eliminating physical engine vibration at the steering console completely.
• 25-Inch XL Shaft: Drops the propeller deep below turbulent surface water, maintaining solid forward thrust in rough ocean conditions.
• Counter-Rotating Gears: Balances propeller torque against a standard rotation engine, forcing the hull to track perfectly straight underway.
• Digital Throttle and Shift: Eliminates mechanical cable friction completely, providing silky smooth gear engagement and exact electronic RPM control.
• 150-Amp Output Alternator: Outputs massive charging power, keeping demanding radar systems and heavy-duty livewell pumps fully powered offshore.
• Integrated Power Steering: Provides electro-hydraulic mechanical assist, delivering sports-car-like handling and zero steering fatigue during long offshore runs.
• Through-Prop Exhaust Hub: Buries loud V10 engine noise and raw combustion fumes deep below the ocean surface for a quieter ride.
• Top-Cowl Service Door: Provides direct access to the 9.5L oil dipstick, simplifying routine fluid checks without removing the heavy engine cover.
• 2.08:1 Gearcase Ratio: Transfers massive V10 torque to the propeller shaft securely, turning large diameter props without slipping.
• Naturally Aspirated V10: Eliminates complex supercharger piping entirely, reducing mechanical failure points when operating miles from the marina.

Why Choose Mercury 350CXL

This exact model acts strictly as the port-side companion in a multi-engine application. It requires a 25-inch transom and compatible digital helm controls. You cannot run this as a single engine without fighting severe steering torque. Proper mercury outboards digital throttle syncing is mandatory.

• Verify your twin-engine transom bracket accommodates a 25-inch shaft length.
• Install a compatible DTS helm binnacle to synchronize shift inputs across both outboards.
• Comply with stringent saltwater emission laws using highly regulated four-stroke combustion.

Ideal Application and Vessel Fitment

This counter-rotating powerhouse is engineered strictly for multi-engine deep-V center consoles, large luxury cruisers, and heavy offshore walkaround hulls. Operating as the port-side drive in a twin engine mercury outboard setup, it actively cancels starboard propeller torque to keep the vessel tracking perfectly straight across steep ocean swells. It excels in blue water tournament fishing and long-distance offshore runs where balancing thrust, managing heavy passenger payloads, and fighting unpredictable crosscurrents require precise, synchronized multi-engine power.

Warranty, Support and Maintenance

Authorized recreational operation receives a 3-Year Limited Warranty alongside a 3-Year Corrosion Warranty. Registered commercial applications fall under a strict 1-Year Limited Warranty with zero corrosion coverage applied to the block. Scheduled maintenance requires replacing gearcase lubricants and changing oil filters at manual-specified intervals. Always save all physical service records. Your engine serial number acts as the only way to source exact genuine replacement parts. For product details and order support, Mulmotor offers assistance before your purchase is placed.