Mercury 400HP 400XXXL Verado V10 Outboard – 35″ Shaft
The 400-horsepower Mercury 400XXXL Verado V10 uses a 35-inch shaft for compatible high-transom installations. Its V10 output supports demanding offshore performance, while the extended shaft helps maintain proper propeller depth and effective propulsion alignment.
Description
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Mercury 400HP 400XXXL Verado V10 Outboard Specs
| Brand | Mercury Marine |
| Full Model Code / Part Number | 400XXXL Verado V10 (35" Shaft) |
| Country of Origin | USA |
| Engine Type & Configuration | 4-Stroke 64° V10 (DOHC with 4-Valves per Cylinder) |
| Horsepower Output (HP / kW) | 400 HP (298 kW) |
| Displacement (cc / cu in) | 5700 cc (349 cu in) |
| Bore x Stroke (mm / in) | 90.0 x 89.0 mm (3.54 x 3.50 in) |
| Maximum RPM Range (Full Throttle Operating Range) | 5800 - 6400 RPM |
| Fuel Induction System | Electronic Fuel Injection (EFI) Computer Controlled with Sequential Multi-Port |
| Ignition System | SmartCraft ECM 0d Digital Inductive |
| Starting System | Electric Start with SmartStart Push Button |
| Steering System | Electro-Hydraulic Power Steering (Integrated) |
| Trim & Tilt System | Smart Craft Power Trim and Tilt |
| Gear Ratio & Shift Mechanism | 2.08:1 (TorqueMaster / Forward - Neutral - Reverse) |
| Exhaust System | Through Propeller |
| Recommended Transom Shaft Length | XXXL: 35 inches |
| Alternator / Charging Output (Amps / Watts) | 150 Amp (Idle Charge Battery Management System) / 1800 Watts |
| Recommended Fuel Grade & Oil Type | Regular Unleaded (Min. 87 Octane) / Mercury 4-Stroke Outboard Oil NMMA FC-W 25W-40 |
| Dry Weight (kg / lbs) | 316 kg / 695 lbs |
| Standard Warranty | 3 Years Limited Recreational Warranty |
Common Question of Mercury 400XXXL
Is the 400XXXL Verado fuel injected?
Yes. The Mercury 400XXXL Verado V10 uses an electronic fuel injection system for controlled fuel delivery across operating conditions. Its 35-inch shaft suits a matching extra-tall transom, while Verado controls, steering, battery, wiring, and gauges require compatibility. Verify package contents before installing this high performance outboard motor.
What transom fits its shaft?
A 35-inch transom is the intended match for this 400XXXL Verado model. Measure the hull before purchase because incorrect shaft length can affect cooling-water pickup, gearcase clearance, propeller immersion, steering response, and trim. Accurate measurement supports a properly fitted ready to bolt marine outboard package.
What should installation include?
Installation should include compatible Verado controls, steering equipment, wiring, gauges, battery connections, fuel supply, mounting hardware, and adequate transom support. Confirm engine weight, maximum horsepower, shaft length, and package contents with the seller. Follow Mercury documentation for final rigging and safe operation.
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