Yamaha 25" X-Long Lower Unit | OEM Gearcase | Fits 1992–2009 Yamaha 225 & 250 HP Outboards | 1-Year Warranty

Product Overview

Replace your worn or damaged gearcase with this genuine OEM Yamaha 25-inch X-Long Lower Unit, designed for 1992–2009 Yamaha 225 HP and 250 HP outboards. Professionally inspected, serviced, and pressure tested, this lower unit delivers dependable performance and long-lasting reliability. Each unit is completely disassembled and inspected under magnification. OEM gears are retained whenever they meet factory specifications, while worn components are replaced as needed. The lower unit is then fully resealed, pressure tested to 12 PSI, fitted with a new water pump impeller, and stripped and primed for paint. Backed by a 1-Year Working Warranty, this gearcase is ready for installation after adding the appropriate gear oil.

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Key Features

• Genuine OEM Yamaha 25" X-Long lower unit
• Fits Yamaha 225 HP and 250 HP outboards
• Compatible with select 1992–2009 models
• Professionally inspected and serviced
• Fully disassembled and inspected under magnification
• OEM gears retained if within factory specifications
• Fully resealed
• Pressure tested to 12 PSI
• New water pump impeller installed
• Stripped, primed, and ready for paint
• Ready for installation
• Includes a 1-Year Working Warranty

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Technical Specifications

Specification	Details
Brand	Yamaha
Product Type	Complete Lower Unit
Condition	Used – Professionally Serviced
Horsepower	225 HP / 250 HP
Model Years	1992–2009
Shaft Length	25" X-Long Shaft
Driveshaft Length	24-1/4"
Driveshaft Splines	20
Prop Shaft Splines	15
Pressure Test	12 PSI
Water Pump	New Impeller Installed
Finish	Stripped & Primed
Gear Oil	Not Included
Warranty	1-Year Working Warranty

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Inspection & Service Performed

Every lower unit undergoes a complete inspection and refurbishment process, including:

• Opened and inspected under magnification
• Fully resealed with new seals
• Pressure tested to 12 PSI
• New water pump impeller installed
• Internal gears inspected and serviced
• Stripped and primed for refinishing
• Ready for installation

Important: Gear oil is not included and must be added before operating the lower unit.

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Compatible Applications

Fits select Yamaha outboards including:

Model Years

• 1992
• 1993
• 1994
• 1995
• 1996
• 1997
• 1998
• 1999
• 2000
• 2001
• 2002
• 2003
• 2004
• 2005
• 2006
• 2007
• 2008
• 2009

Horsepower

• Yamaha 225 HP
• Yamaha 250 HP

Shaft Length

• 25" X-Long Shaft

Always verify compatibility using your engine's model and serial number before ordering.

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Condition

This OEM Yamaha lower unit has been professionally serviced and inspected for reliable operation. Condition highlights include:

• Used OEM Yamaha gearcase
• Fully inspected and serviced
• Fully resealed
• Pressure tested to 12 PSI
• New water pump impeller installed
• Internal gears inspected
• Stripped and primed for paint
• Ready for installation
• Minor cosmetic signs of normal use may be present

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What's Included

Your purchase includes:

• Complete OEM Yamaha 25" X-Long Lower Unit
• New water pump impeller installed
• Professionally serviced gearcase

Not Included:

• Gear oil
• Propeller
• Mounting hardware unless shown

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Warranty

This lower unit is backed by a 1-Year Working Warranty from Southcentral Outboards. If the unit fails during normal recreational use within the warranty period, it will be repaired or replaced. If a replacement is unavailable, an appropriate resolution will be provided.

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Shipping Information

Every lower unit is professionally packaged to help prevent shipping damage. Shipping is available throughout the United States, with international shipping available upon request. For an accurate freight quote, please provide:

• ZIP or Postal Code
• Country
• Residential or Commercial Address
• Liftgate requirement (if applicable)

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Why Buy from EZ Boats Marine?

• Genuine OEM Yamaha Parts
• Professionally Inspected & Serviced
• Fully Resealed
• Pressure Tested
• New Water Pump Impeller Installed
• Stripped & Primed for Refinishing
• Fast & Secure Shipping
• Expert Technical Support
• 1-Year Working Warranty

EZ Boats Marine is committed to supplying premium-quality OEM marine parts backed by dependable customer service and technical expertise.

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Frequently Asked Questions

Is this an OEM Yamaha lower unit?

Yes. This is a genuine OEM Yamaha lower unit that has been professionally serviced and tested before sale.

Which engines does it fit?

It fits select 1992–2009 Yamaha 225 HP and 250 HP outboards with a 25-inch X-Long shaft. Always verify compatibility using your engine's model and serial number.

What service has been completed?

The lower unit has been:

• Fully disassembled and inspected
• Resealed with new seals
• Pressure tested to 12 PSI
• Fitted with a new water pump impeller
• Internal gears inspected and serviced
• Stripped and primed for paint

Is gear oil included?

No. Gear oil is not included and must be added before installation and operation.

Is it ready to install?

Yes. After filling with the recommended gear oil, the lower unit is ready for installation on a compatible Yamaha outboard.

Does it include a warranty?

Yes. It includes a 1-Year Working Warranty covering failures during normal recreational use.

Can EZ Boats Marine verify compatibility?

Absolutely. Send us your Yamaha engine's model number and serial number, and we'll confirm whether this OEM 25-inch X-Long Lower Unit is the correct replacement for your outboard before you purchase.