Mercury
Mercury SeaPro V8 300 AMS: specifications
The Mercury SeaPro V8 300 AMS is an outboard rated at 300 hp with V8 (eight-cylinder V) architecture.
Key figures
- Power
- 300hp
- Dry weight
- 272kg
- Displacement
- 4,572cm³
- Alternator output
- 115A
- Indicative price
- n/a
- Maximum warranty
- 2years
Sources and technical context
Document year: 2018.
Manufacturer's official documentation. The original document link has not yet been recorded for this page.
Notes and conditions (FR)
Technical specifications
Block & combustion
| Architecture | V8 |
|---|---|
| Cylinders | 8 |
| Cycle | 4-stroke |
| Displacement | 4,572 cm³ |
| Bore × stroke | 92 × 86 mm |
| Compression ratio | n/a |
| Max rpm | 4800–5600 rpm |
| Specific output | 66 hp/L |
| Fuel system | EFI |
| Min. fuel | RON 90 (87 mini) |
Transmission & gearcase
| Gear ratio | 1,75:1 |
|---|---|
| Propeller configuration | Mono-hélice |
| Counter-rotating dual prop | n/a |
| 2-speed gearbox | No |
| Counter-rotating version | No |
| Available shafts | L/X/U (20"/25"/30") |
Weight & footprint
| Dry weight (transom load) | 272 kg (version la plus légère (à sec)) |
|---|---|
| Power-to-weight ratio | 1.10 hp/kg |
Electrical charging
| Alternator (max) | 115 A |
|---|---|
| Amps per horsepower | 0.38 A/hp |
Control & integration
| Digital throttle & shift (DBW) | Yes |
|---|---|
| Control | DTS + direction électro-hyd. |
| Steering | Électro-hydraulique assistée |
| Power steering | Yes |
| Docking joystick | In-house |
| GPS position hold | No |
| Direct injection | No |
| VTEC (variable timing) | No |
Cost & warranty
| Public price | n/a |
|---|---|
| Cost per horsepower | n/a |
| Base warranty | 2 years |
| Maximum warranty (conditional) | 2 years |
Operation & compliance
| Emissions standard | RCD 2013/53/UE |
|---|
Head to head with its direct rivals
Prices, warranties and test conditions are not harmonised. They remain visible but do not determine strengths or rankings.
Side-by-side figures for the SeaPro V8 300 AMS against Honda BF300 · Parsun F300 EFI · Selva White Whale 300 EFI, on the criteria that drive the purchase.
| Criterion | SeaPro V8 300 AMS | Honda BF300 | Parsun F300 EFI | Selva White Whale 300 EFI |
|---|---|---|---|---|
| Power hp | 300 | 300 | 300 | 300 |
| Dry weight kg | 272 | 355 | 285 | 260 |
| Power / weight hp/kg | 1.1 | 0.85 | 1.05 | 1.15 |
| Alternator output A | 115 | n/a | n/a | 70 |
| Cost per hp €/hp | n/a | 111 | n/a | 105 |
| Base warranty years | 2 | 3 | 2 | 5 |
An index requires at least two criteria documented for every compared engine. “n/a” means the available data cannot assess this use; it is not a poor rating.
HondaBF300300 hp · 355 kg · 5 LParsunF300 EFI300 hp · 285 kg · 4.2 LSelvaWhite Whale 300 EFI300 hp · 260 kg · 4.2 L