Yamaha XTO Offshore V8 · Virginia Beach
Yamaha XF425 outboard: specs, rigging and repower in Virginia Beach.
The XF425 is the 425 hp rating of the same 5.6-liter XTO Offshore V8, making its power at 5500 RPM. It shares the XF450's direct injection, integrated electric steering and 25, 30 and 35-inch shafts, and Yamaha lists 100 amps of gross alternator output. It rigs with digital controls or Helm Master EX.
- Horsepower
- 425 hp
- Engine type
- V8 / DOHC / 32 valves / 4 Valves per Cylinder
- Displacement
- 5.6L
- Shaft length
- 25" - 30" - 35"
- Weight †
- 432 kg (952 lbs) / 443 kg (977 lbs) / 453 kg (999 lbs)
Specifications
Yamaha XF425
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.
| Weight † | 432 kg (952 lbs) / 443 kg (977 lbs) / 453 kg (999 lbs) |
|---|---|
| Full Throttle RPM Range | 5000 - 6000 RPM |
| Fuel Induction System | Direct Injection / Up to 2900 PSI |
| Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
| Engine Type | V8 / DOHC / 32 valves / 4 Valves per Cylinder |
| Displacement | 5.6L |
| Bore x Stroke | 96 x 96 mm (3.78 x 3.78 in) |
| Prop Shaft Horsepower | 425hp at 5500 RPM |
| Alternator Output at W.O.T. | 100 Amp Gross, Max |
| Compression Ratio | 12.2:1 |
| Recommended Fuel | Octane 89 |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel / Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Propeller (Except in Reverse Under 2500 RPM) |
| Intake | 32 |
| Ignition | TCI Microcomputer |
| Spark Plug | ILMAR7E-9 / Iridium |
| Starting System | Electric w/ PTT |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 7.8L / 8.2 Quarts | 7.5L / 7.9 Quarts |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | (25/14) 1.79 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 25" - 30" - 35" |
| Degree of Tilt | -4° through +73° |
| Degree of Trim | -4° through +16° |
| Mounting Centers | 28.5" |
| Steering | Integrated, Electric Actuation |
| Steering Angle (maximum) | 31° from center, either direction |
| Warranty | Limited 5-Year Pleasure, 3-Year Government, 1-Year Commercial |
| Variable Trolling RPM Range | 600 - 1000 |
† 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).
Rigging
Shaft lengths, controls
and Helm Master EX.
Shaft lengths
Yamaha lists: 25" - 30" - 35"
We confirm the right shaft for your transom before we quote.
Controls
- Helm Master® EX (compatible)
- Digital Controls (compatible)
- Mechanical Controls (not available)
- Multi-Function Tiller Handle (not available)
Gauges
- CL5 Touchscreen Display (compatible)
- Digital and Analog Gauges (compatible)
Yamaha lists Helm Master EX as compatible with the XF425. We fit Helm Master EX upgrades and confirm what a given boat can take before we quote it.
Propellers Yamaha names for the XF425
- Yamaha XTO ECFrom Yamaha's description: For specific XTO Offshore applications where ventilation is a problem.
- Yamaha XTO OSFrom Yamaha's description: Matched to V8 XTO Offshore torque on boats over 50 feet.
Yamalube oil change kit
- XTO Oil Change KitYamaha's row: Model 5.6L XF425 · PROD. YEAR '18~ · 05W-30 KIT LUB-MRNXT-KT-05 · 10W-30 KIT LUB-MRNXT-KT-10 · 20W-40 KIT NA
Features
What's built into
the XF425.
- 425 hp V8 rated on 89-octane fuel.
- 12.2:1 compression ratio.
- Uses iridium spark plugs and four thermostats.
- Offered in Yamaha gray or pearlescent white per the product page.
- 5-year limited warranty for pleasure use.
- Direct injection sprays fuel at high pressure straight into each combustion chamber.
- Five-pump, three-stage fuel system reaches injection pressure up to 2900 PSI.
- In-bank exhaust gives gases a direct path through the lower unit and out the prop hub.
- Dedicated XTO propellers cover 16 to 17 1/8-inch diameters and 15 to 27-inch pitches.
- In-water gear lube change lets a technician replace lower-unit oil without hauling the boat.
- Below 2,500 RPM exhaust is routed away from the propeller for stronger low-speed control.
- Tilt pump stops at the maximum tilt setting, cutting noise and electrical draw.
- Two flushing options: built-in hose through the rigging tube or a front hose connection.
- Wide-span upper motor mounts work with the Long Span Mounting System to reduce vibration.
- Phase Angle Control Charging: up to 96 net amps at idle per engine, 480 in a quint.
- Redesigned rigging tube adds 3.25 inches of motor-well clearance when tilted up.
- Integrated digital electric steering motor takes commands directly from the electric helm.
- Works with Helm Master EX, including autopilot, DriftPoint Track and control of up to five engines.
- Carbon-coated, shimless bucket-style valve lifters for durability and less maintenance.
- Dual-chamber oil pump maintains oil delivery at every engine speed.
- Dual overhead camshafts driven by self-tensioning chains running in an oil bath.
- Plasma-fused sleeveless cylinder bores, which Yamaha rates 60 percent harder than steel.
- Two-stage water pump pairs a large rubber impeller with a steel impeller.
Repower
Repowering with the XF425
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 XF425 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 XF425 for it. Financing is available on repowers through Yamaha Financial Services.
Ready when you are.
The XTO Offshore V8 family
Other engines
in this family.
Common questions
Yamaha XF425
questions, answered.
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 XF425 for it. We answer same business day.