Yamaha V6 Offshore 4.2L · Virginia Beach

Yamaha F300 outboard: specs, rigging and repower in Virginia Beach.

The F300 is the top rating of Yamaha's 4.2-liter V6 Offshore, 300 hp at 5500 RPM on 89-octane fuel. Yamaha lists 25, 30 and 35-inch shafts, with 30 and 35 inches on digital (DEC) models only; the digital versions carry built-in electric steering and work with Helm Master EX. Digital models come in Yamaha gray, pearlescent white and classic white; mechanical models are gray only.

Horsepower
300 hp
Engine type
V6
Displacement
4.2L
Shaft length
25" - 30" - 35" (F300 DEC Only)
Weight †
250 kg (551 lbs) / 254 kg (562 lbs) / 265 kg (588 lbs)
Get a quote on the F300Call (757) 464-4600
Yamaha
Yamaha F300 V6 Offshore outboard, grayYamaha F300 cowling with the 300 V6 4.2L decal
Outboard images: Yamaha Motor Corporation. Coastal Marine is an authorized Yamaha dealer and installs these outboards at its Shore Drive shop.

Specifications

Yamaha F300
specs, as Yamaha lists them.

Specs and features: Yamaha, read from yamahaoutboards.com and Yamaha's Engine Comparison tool on 2026-10-05. Yamaha can change a model by model year; we confirm the exact engine when we quote.

Yamaha F300 specifications
Weight †250 kg (551 lbs) / 254 kg (562 lbs) / 265 kg (588 lbs)
Full Throttle RPM Range5000 ~ 6000 rpm
Fuel Induction SystemEFI
Recommended Engine OilYamalube® 4M (See owner's manual)
Engine TypeV6
Displacement4.2L
Bore x Stroke96 x 96mm (3.78 x 3.78 in)
Prop Shaft Horsepower300hp at 5500 rpm
Alternator Output at W.O.T.50 - 70 Amp
Compression Ratio10.3:1
Recommended FuelOctane 89
Recommended Fuel FiltrationYamaha 10-Micron Fuel / Water Separating Filter (external)
C.A.R.B. Rating3-Star
ExhaustThrough Propeller
Intake24
IgnitionTCI Microcomputer
Spark PlugLFR6A-11
Starting SystemElectric
LubricationWet Sump
Engine Oil Capacity6.3L/6.0L
Recommended CoolingThermostatic Control
Ethanol Blend Limit10% Maximum
Gear Ratio1.75:1
Gear ShiftForward, Neutral, Reverse
Shaft Length25" - 30" - 35" (F300 DEC Only)
Degree of TiltMechanical 67°, Digital Electric Steering 69°, Bolt-on steering 70°
Degree of Trim-3° through +16°
Mounting Centers28.5"
SteeringIntegrated, Electric Actuation
Steering Angle (maximum)32° from center, either direction
WarrantyLimited 3-Year Pleasure, 3-Year Government, 1-Year Commercial

† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

Compared

How the F300 compares
with the F250, F350.

From Yamaha's spec tables; weights are the lightest Yamaha lists, valvetrain is from its dealer spec signs.

Same family

F300 vs F250

  • Rated output: F300 300hp at 5500 rpm; F250 250hp at 5500 rpm.
  • Fuel: F300 Octane 89; F250 Octane 87.

Same on both: 4.2L displacement, DOHC (24-valve) valvetrain (spec sign), 551 lb lightest listed weight, 1.75:1 gear ratio, 50 - 70 Amp alternator, 25, 30 and 35-inch (35-inch: DEC only) shaft, 28.5-inch mounting centers.

Next size up

F300 vs F350

  • Rated output: F300 300hp at 5500 rpm; F350 350 @ 6000.
  • Displacement: F300 4.2L; F350 4.3L.
  • Weight: F300 78 lb lighter at the lightest weight Yamaha lists (551 lb vs 629 lb).
  • Shafts: F300 25, 30 and 35-inch (35-inch: F300 DEC only); F350 25, 30 and 35-inch.
  • Compatible controls: only the F300 lists Mechanical Controls.

Same on both: DOHC (24-valve) valvetrain (spec sign), 1.75:1 gear ratio, 50 - 70 Amp alternator, 89 octane, 28.5-inch mounting centers.

Rigging

Controls, gauges
and Helm Master EX.

Controls

Gauges

Yamaha lists Helm Master EX as compatible with the F300. We fit Helm Master EX upgrades and confirm what a given boat can take before we quote it.

Propellers Yamaha names for the F300

Every Yamaha and TURBO prop

F300 model codes

Yamaha F300 model codes from Yamaha's current model-code list
Model codeControlsColor
F300XSBDigital (DEC)Gray
LF300XSBDigital (DEC)Gray
F300USBDigital (DEC)Gray
LF300USBDigital (DEC)Gray
F300ESBDigital (DEC)Gray
LF300ESBDigital (DEC)Gray
F300XSB2Digital (DEC)Pearl White
LF300XSB2Digital (DEC)Pearl White
F300USB2Digital (DEC)Pearl White
LF300USB2Digital (DEC)Pearl White
F300ESB2Digital (DEC)Pearl White
LF300ESB2Digital (DEC)Pearl White
F300XSB4Digital (DEC)Classic White
LF300USB4Digital (DEC)Classic White
LF300XSB4Digital (DEC)Classic White
F300ESB4Digital (DEC)Classic White
F300USB4Digital (DEC)Classic White
LF300ESB4Digital (DEC)Classic White
F300XCBDigital (DEC)Gray
LF300XCBDigital (DEC)Gray
F300UCBDigital (DEC)Gray
LF300UCBDigital (DEC)Gray
F300ECBDigital (DEC)Gray
LF300ECBDigital (DEC)Gray
F300XARemote mechanicalGray
LF300XARemote mechanicalGray

Model codes from Yamaha's current model-code list. Ask us which code fits your boat; we confirm it when we quote.

Features

What's built into
the F300.

  • 300 hp 4.2-liter V6; 89-octane fuel recommended.
  • 25, 30 and 35-inch shafts; 30 and 35 inches on digital (DEC) models only.
  • Alternator output up to 70 amps.
  • Updated cowling; Propeller Indicator Lights on the engine when rigged with Helm Master EX.
  • Colors: Yamaha gray, pearlescent white and classic white.
  • Multi-point electronic fuel injection with electronically controlled throttle valves.
  • Six sensors feed the ECM air and engine data for continuous adjustment.
  • Plasma-fused sleeveless cylinders allow larger bores without larger outer dimensions.
  • Variable Camshaft Timing improves hole shot and mid-range acceleration.
  • Digital F300 and F250 have built-in electric steering with no hydraulic hoses.
  • Speed Control with Pattern Shift enables sub-idle trolling; HMEX autopilot can target 0.25 mph.
  • Helm Master EX compatible on digital models; optional Y-COP theft deterrent.
  • Pairs with the Saltwater Series II HP propeller, which uses the Shift Dampener System.
  • TotalTilt: double-tap the trim button for a full tilt up or down.
  • Thrust Enhancing Reverse Exhaust improves reverse bite below 2500 RPM.

Repower

Repowering with the F300
at Coastal Marine.

Coastal Marine is an Elite Yamaha dealer and an authorized Yamaha Repower Center on Shore Drive in Virginia Beach. A repower with the F300 takes the old or worn-out outboard off a sound hull, of any make, and puts the new Yamaha on, with the controls, gauges and rigging the new setup needs. Warranty work on the Yamaha power we install is authorized in-house.

We don't post engine prices. Tell us the boat, what's on the transom now and roughly how many hours it has, and we'll quote the F300 for it. Financing is available on repowers through Yamaha Financial Services.

F300 repower fit

Shaft lengths
25, 30 and 35-inch (35-inch: F300 DEC only)Yamaha spec table
Mounting centers
28.5-inchYamaha spec table
Weight †
551 to 588 lbYamaha spec table, lightest to heaviest listed
Control types
digital (DEC) (F300XSB, LF300XSB, F300USB, LF300USB, F300ESB, LF300ESB, F300XSB2, LF300XSB2, F300USB2, LF300USB2, F300ESB2, LF300ESB2, F300XSB4, LF300USB4, LF300XSB4, F300ESB4, F300USB4, LF300ESB4, F300XCB, LF300XCB, F300UCB, LF300UCB, F300ECB, LF300ECB); remote mechanical (F300XA, LF300XA)Yamaha model-code list
Steering
Integrated, Electric ActuationYamaha spec table
Most popular propeller
Saltwater Series II, with Shift Dampener System (SDS), 17” pitchYamaha dealer spec sign, 2026-09-01
Get a quote on the F300How a repower works at CoastalCan you finance just the engines?
(757) 464-4600Text the shop

The V6 Offshore 4.2L family

Other engines
in this family.

Yamaha F250250 hpSpecs and repower Yamaha F225225 hpSpecs and repower
Yamaha V6 Offshore 4.2L familyEvery Yamaha outboard

Common questions

Yamaha F300
questions, answered.

Yamaha lists the same 4.2L displacement, DOHC (24-valve) valvetrain (spec sign), 551 lb lightest listed weight, 1.75:1 gear ratio, 50 - 70 Amp alternator, 25, 30 and 35-inch (35-inch: DEC only) shaft and 28.5-inch mounting centers for both. Where they differ: Rated output: F300 300hp at 5500 rpm; F250 250hp at 5500 rpm. Fuel: F300 Octane 89; F250 Octane 87. Also on the F300 and not the F250: Updated cowling; Propeller Indicator Lights on the engine when rigged with Helm Master EX.

Both. Yamaha's model-code list for the F300 has 24 digital (DEC) codes (F300XSB, LF300XSB, F300USB, LF300USB, F300ESB, LF300ESB, F300XSB2, LF300XSB2, F300USB2, LF300USB2, F300ESB2, LF300ESB2, F300XSB4, LF300USB4, LF300XSB4, F300ESB4, F300USB4, LF300ESB4, F300XCB, LF300XCB, F300UCB, LF300UCB, F300ECB, LF300ECB) and 2 remote mechanical codes (F300XA, LF300XA). Its spec table qualifies the shafts: 25" - 30" - 35" (F300 DEC Only).

Yamaha lists Octane 89 for the F300, with an ethanol blend limit of 10% Maximum. For the F250 it lists Octane 87.

Yes. Yamaha lists Helm Master EX among the compatible controls for the F300.

Get a quote
on new Yamaha power.

Tell us the boat, the engines on it now and roughly the hours, and we'll quote the F300 for it. We answer same business day.

Just leave a phone or an email.

Call (757) 464-4600Text