The Mercury SeaPro 350 XL AMS DTS V10 is a 4-stroke outboard marine engine, boasting 350 HP / 257 kW and a 5700 cc V10 (10-cylinder) engine, designed for commercial fishing boats, rental tour boats, water taxis, and heavy-use marine vessels that require an extra-long shaft. The SeaPro series is a Mercury line specifically developed for commercial and heavy-use outboard motors. Enhanced durability, SmartCraft integration, and extended service intervals are optimized to meet the needs of commercial operators.
SeaPro 350 XL AMS DTS V10 Series Features and Technology Advantages
SeaPro engines aim for long life in saltwater environments with a reinforced cooling system and increased anode protection compared to standard FourStroke series. The SmartCraft gauge system enables fleet-specific engine monitoring.
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V10 (10-Cylinder) Engine (5700 cc): SeaPro engines aim for long life in saltwater environments with a reinforced cooling system and increased anode protection compared to standard FourStroke series.
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Extra-Long Shaft (572 mm (22.5")): The propeller operates at the optimum depth with the correct transom height.
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SeaPro Durability Package: Reinforced cooling, increased anode protection, and extended service intervals.
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Electric Start: Instant engagement with a key or button — comfortable and fast starting.
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Power Trim & Tilt: Adjust trim angle with a button while cruising — optimizing fuel efficiency; tilt allows lifting the engine completely out of the water.
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External Floating Fuel System: Connection for a large-capacity external tank — range determined by user needs.
Extra-Long Shaft — Suitable for Which Boat Type?
The extra-long shaft (572 mm (22.5")) allows the propeller to operate at the correct water depth on large fiberglass and aluminum boats with high freeboards. It is 64 mm longer than a standard long shaft (508 mm).
Technical Specifications
| Engine Power |
350 HP / 257 kW |
| Cylinder Displacement |
5700 cc |
| Cylinder Configuration |
V10 (10 Cylinders) |
| Engine Type |
4-stroke, Naturally Aspirated V10, DOHC, 40 valves, EFI electronic fuel injection |
| Shaft Length |
Extra-Long Shaft / 572 mm (22.5") |
| Gear System |
F – N – R (Forward / Neutral / Reverse) |
| Starting System |
Electric |
| Trim System |
Power Trim & Tilt |
| Fuel System |
External floating system |
| Weight (Dry) |
316 KG |
| Control Type |
DTS Digital Throttle & Shift |
| Model Code |
SeaPro 350 XL AMS DTS V10 |
Who is This Engine For?
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Commercial fishing and tour boats: SeaPro's increased durability for intensive daily use.
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Water taxis and rental boats: Low maintenance costs and extended service intervals.
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Search and rescue and patrol boats: Reliable power and SmartCraft engine monitoring.
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Coastal fishing fleet-specific: Standard comparative performance and durability.
Maintenance and Longevity
4-stroke Mercury engines operate trouble-free for many years with regular oil changes and an end-of-season maintenance protocol. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. In saltwater use, freshwater flushing is mandatory after each use.
Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Mercury Spare Parts
Frequently Asked Questions
Why is the Mercury SeaPro 350 HP recommended for commercial use?
The SeaPro series offers a reinforced cooling system and increased anode protection compared to standard FourStroke engines. SmartCraft integration simplifies fleet management and engine monitoring. Extended service intervals reduce operational costs.
What does the SmartCraft system provide in SeaPro engines?
SmartCraft transmits engine status, fuel consumption, temperature, and hourly operating data to a digital display. In multi-engine configurations, each engine can be monitored separately. The early warning system prevents unexpected failures.
What are the maintenance intervals for SeaPro engines?
SeaPro engines are designed for extended service intervals. Oil changes should be performed according to the manufacturer's recommendations. In saltwater use, freshwater flushing after each use and an end-of-season anode check are mandatory.
Which boat and brand types are compatible with the SeaPro 350 XL AMS DTS V10?
Mercury outboard motors are compatible with many fiberglass, aluminum, and inflatable boat models thanks to their universal transom clamp or transom mounting system. The only criteria are your boat's 572 mm (22.5") transom height and the maximum engine power approved by the manufacturer. You can get compatibility confirmation from Clever Marin by sharing your boat model.
Related Products and Categories
Is This the Right Configuration for Your Boat?
Share your boat model, transom height, and intended use — let's verify together the suitability of the Mercury SeaPro 350 XL AMS DTS V10 engine for your boat and the correct shaft selection.