$39,951.00
400 HP four-stroke V10, 5.7L (349 cu in) naturally aspirated
35″ ultra-long shaft with standard rotation
Digital Throttle & Shift (DTS), electric start, power trim/tilt
150-amp alternator with class-leading output
Advanced Sound Control for customizable exhaust tone
NMEA 2000 compliance for multifunction display integration
Advanced MidSection (AMS) for reduced vibration
Corrosion-resistant for freshwater/saltwater durability
The Mercury 400XXXL Verado V10 is a high-performance four-stroke outboard motor, featuring the industry’s first naturally aspirated V10 powerhead, designed for large offshore boats, center consoles, multi-hulls, and heavy vessels. Introduced in 2022, this 400 HP motor with a 35-inch ultra-long shaft delivers exceptional power and efficiency with a 5.7L (349 cubic inch) displacement and a maximum RPM range of 5800-6400. It includes Digital Throttle & Shift (DTS) for smooth, instantaneous control, electric start, and power trim/tilt. The Advanced MidSection (AMS) and under-cowl noise management minimize vibration and noise, making it 45% quieter than competitors at cruising speed. A 150-amp alternator, the highest in its class, provides four times the output of competitors at cruise, supporting heavy electronics loads. The hydrodynamic gearcase with a large-diameter Revolution X™ propeller enhances high-speed efficiency and low-speed handling. Advanced Sound Control allows toggling between a quiet exhaust or a sportier tone. Built for durability, it uses advanced alloys, corrosion-resistant coatings, and a freshwater flush system for saltwater reliability. Calibrated for 87-octane fuel with Advanced Range Optimization (ARO), it offers superior fuel economy for long-distance runs.
| Engine | 4-stroke, DOHC V10 | 40-valve, 5.7L | 349 cu in | 400 HP @ 5800-6400 RPM | EFI, naturally aspirated | Closed-loop fuel system | 87-octane fuel |
| Shaft | 35″ ultra-long | Standard rotation | Corrosion-resistant | Revolution X™ prop | Power trim/tilt | Hydrodynamic gearcase | Salt/freshwater rated |
| Controls | DTS drive-by-wire | Electric start | Joystick Piloting option | NMEA 2000 compliant | Adaptive Speed Control | Engine alert system | Electro-hydraulic steering |
| Charging | 150 amps total | High-output alternator | Regulated charging | Low-speed charging | Supports electronics | Battery cable | 4x cruise output |
| Weight | 695 lbs / 316 kg | Lightweight design | Aluminum block | Transom mount | Minimal drag | Robust construction | Low maintenance |
| Performance | 5800-6400 RPM range | 55% faster 0-top speed | High torque | Low emissions | Quiet operation | Fuel-efficient | Top speed optimized |
| Compatibility | Large offshore boats | Center consoles | Multi-hulls | Multi-engine setups | NMEA 2000 MFDs | 26″ mounting centers | Repower compatible |
| Dimensions | 35″ shaft length | 37.1″ W | 48.4″ H | 81.4″ L | Corrosion-resistant | Transom mount | IPX4 splash rating |
| Engine | 4-stroke, DOHC V10 | 40-valve, 5.7L | 349 cu in | 400 HP @ 5800-6400 RPM | EFI, naturally aspirated | Closed-loop fuel system | 87-octane fuel |
| Shaft | 35″ ultra-long | Standard rotation | Corrosion-resistant | Revolution X™ prop | Power trim/tilt | Hydrodynamic gearcase | Salt/freshwater rated |
| Controls | DTS drive-by-wire | Electric start | Joystick Piloting option | NMEA 2000 compliant | Adaptive Speed Control | Engine alert system | Electro-hydraulic steering |
| Charging | 150 amps total | High-output alternator | Regulated charging | Low-speed charging | Supports electronics | Battery cable | 4x cruise output |
| Weight | 695 lbs / 316 kg | Lightweight design | Aluminum block | Transom mount | Minimal drag | Robust construction | Low maintenance |
| Performance | 5800-6400 RPM range | 55% faster 0-top speed | High torque | Low emissions | Quiet operation | Fuel-efficient | Top speed optimized |
| Compatibility | Large offshore boats | Center consoles | Multi-hulls | Multi-engine setups | NMEA 2000 MFDs | 26″ mounting centers | Repower compatible |
| Dimensions | 35″ shaft length | 37.1″ W | 48.4″ H | 81.4″ L | Corrosion-resistant | Transom mount | IPX4 splash rating |
V10 Power and Efficiency: 5.7L V10 powerhead with a 2.08:1 gear ratio delivers 55% faster 0-to-top-speed performance than a 350 HP competitor, with ARO for optimized fuel efficiency on 87-octane fuel.
Precision Control: DTS controls ensure smooth shifting and instant throttle response; optional Joystick Piloting for multi-engine setups enhances docking precision, with electro-hydraulic steering using less than half the power of competitors.
High-Output Charging: 150-amp alternator provides four times the output at cruise compared to competitors, ideal for electronics-heavy setups.
Quiet and Smooth: AMS isolates vibration, while tuned intake, fuel-injector covers, and cowl sealing make it 56% quieter than rivals at wide-open throttle, with Advanced Sound Control for customizable exhaust tones.
Durable Design: Low-copper aluminum alloys, durable coatings, sealed electronics, and a freshwater flush system ensure corrosion resistance in harsh marine environments.
Precision Gearcase: Hydrodynamic gearcase with Revolution X™ propeller ensures efficient high-speed performance and authoritative low-speed handling for docking and hole shots.
Maintenance Ease: Electronic oil sensor and top-cowl access door simplify oil checks and fills, with 100-hour minor and 300-hour major service intervals.
Versatile Mounting: Designed for 26-inch center-to-center mounting, ideal for repowering or multi-engine setups on large vessels.
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Order Processing & Shipping Times
Orders are processed and shipped within 2-5 business days (excluding weekends and holidays). All items are delivered within 10 business days from the date of shipment. As your delivery date nears, the shipper will contact you to coordinate a seamless drop-off.
Before ordering, please verify your shipping address to prevent delays. Your satisfaction is our priority, and we’re committed to making your shopping experience smooth and enjoyable. Have questions? Email us at sales@faa-marine.com—we’re here to help!
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6 reviews for Mercury 400hp Verado V10 35″ Shaft | 400XXXL
the build quality and performance are top-notch for a motor this size runs quietly and with tons of power definitely worth the investment especially at the price i got it for
got this mercury 400hp verado at a great price and it exceeded my expectations the power and smooth running are unmatched best engine for serious boaters
this 400hp verado v10 is an absolute powerhouse runs super smooth with insane torque and acceleration the 35″ shaft fits perfectly my boat handles like a dream
powerful and smooth motor but quite heavy to handle on my own setup overall very satisfied with the purchase and performance
great motor with impressive power delivery takes a bit to get used to due to its size but once you master it it performs flawlessly would love a bit more fuel efficiency though