2027 Yamaha Four Stroke V6 Offshore LF300USB4
Description
Rig your next offshore build with the confidence of Yamaha power: this 2027 Yamaha Four Stroke V6 Offshore LF300USB4 in Yamaha Classic White is a standalone, engine-only listing designed to be the heart of a serious saltwater setup.
At the center is Yamaha’s 4.2L V6—a 24‑valve, DOHC platform with a perfectly square 96 mm x 96 mm bore and stroke and a 10.3:1 compression ratio. The result is the kind of strong, clean acceleration offshore boaters love: 300 bhp (223.9 kW) at 5500 RPM, with a full-throttle operating range of 5000–6000 RPM. That broad working band helps this outboard feel lively when pushing heavier hulls onto plane and steady when you’re carrying crew, ice, and gear. Matched to a 1.75:1 gear ratio and propeller drive, it’s built to translate V6 torque into real-world thrust—ideal for powering larger center consoles, big bay boats, offshore walkarounds, and multi-engine applications where quick planing and strong midrange pull matter.
Because offshore days are measured in miles, not minutes, four-stroke efficiency and fuel injection are big wins at cruise. This engine is designed to deliver smooth, dependable power while sipping sensibly compared to older tech—helping extend your range when your “next stop” is a long run to the grounds.
The offshore environment is demanding, and this Yamaha is salt-water capable with water (open loop) cooling and the smart protections you want when conditions get rough: a visual/audible engine alert system plus emergency RPM reduction for added peace of mind.
This LF300USB4 is set up for modern rigging with remote outboard steering control, steering assist, and power trim. It’s also counter-rotating capable, making it an excellent choice whether you’re repowering a single 30-inch transom boat or planning a twin-engine setup. Output for electronics is handled by a robust 70-amp alternator, and starting is effortless with electric start. It runs on mid-grade gasoline.
With a 30-inch shaft and a 562 lb dry weight, this is a serious offshore outboard in a clean Classic White finish—ready to be the powerhouse behind your next big-water adventure. Warranty coverage varies by dealer/program; ask us for current Yamaha warranty details on this new engine.
Color Options
Pricing
Engine
Drive Line
Steering
Rig your next offshore build with the confidence of Yamaha power: this 2027 Yamaha Four Stroke V6 Offshore LF300USB4 in Yamaha Classic White is a standalone, engine-only listing designed to be the heart of a serious saltwater setup.
At the center is Yamaha’s 4.2L V6—a 24‑valve, DOHC platform with a perfectly square 96 mm x 96 mm bore and stroke and a 10.3:1 compression ratio. The result is the kind of strong, clean acceleration offshore boaters love: 300 bhp (223.9 kW) at 5500 RPM, with a full-throttle operating range of 5000–6000 RPM. That broad working band helps this outboard feel lively when pushing heavier hulls onto plane and steady when you’re carrying crew, ice, and gear. Matched to a 1.75:1 gear ratio and propeller drive, it’s built to translate V6 torque into real-world thrust—ideal for powering larger center consoles, big bay boats, offshore walkarounds, and multi-engine applications where quick planing and strong midrange pull matter.
Because offshore days are measured in miles, not minutes, four-stroke efficiency and fuel injection are big wins at cruise. This engine is designed to deliver smooth, dependable power while sipping sensibly compared to older tech—helping extend your range when your “next stop” is a long run to the grounds.
The offshore environment is demanding, and this Yamaha is salt-water capable with water (open loop) cooling and the smart protections you want when conditions get rough: a visual/audible engine alert system plus emergency RPM reduction for added peace of mind.
This LF300USB4 is set up for modern rigging with remote outboard steering control, steering assist, and power trim. It’s also counter-rotating capable, making it an excellent choice whether you’re repowering a single 30-inch transom boat or planning a twin-engine setup. Output for electronics is handled by a robust 70-amp alternator, and starting is effortless with electric start. It runs on mid-grade gasoline.
With a 30-inch shaft and a 562 lb dry weight, this is a serious offshore outboard in a clean Classic White finish—ready to be the powerhouse behind your next big-water adventure. Warranty coverage varies by dealer/program; ask us for current Yamaha warranty details on this new engine.
Color Options
Pricing
Engine
Drive Line
Steering
Specifications
| Manufacturer | Yamaha |
| Model | Four Stroke V6 Offshore LF300USB4 |
| Year | 2027 |
| Condition | New |
| Engine Type | V6 |
| Bore x Stroke | Bore: 3.78 in. (96 mm); Stroke: 3.78 in. (96 mm) |
| Displacement | 254 cu. in. (4169 cc) |
| Starting | Electric |
| Trim Method | Power |
| Propshaft Horsepower | 300 bhp; 223.9 kW |
| Fuel Induction | Fuel Injected |
| Alternator | 70 |
| Cooling | Water (Open Loop) |
| Steering | Remote |
| Warranty | 36 |