Mercury Counter Rotation Lower Unit | 25" Shaft | 1.75:1 Gear Ratio | Fits 1994–1998 Mercury 200HP, 225HP & 250HP V6 Outboards | 1-Year Warranty

Product Overview

Restore the performance of your twin-engine setup with this genuine Mercury Counter Rotation Lower Unit, designed for select 1994–1998 Mercury 200HP, 225HP, and 250HP V6 outboard engines. Featuring a 25-inch shaft, 1.75:1 gear ratio, and counter-rotation (left-hand rotation) configuration, this professionally serviced lower unit delivers smooth shifting, dependable power transfer, and long-lasting durability. Ideal for twin-engine installations requiring a counter-rotating gearcase, this OEM Mercury lower unit has been completely inspected, fully resealed, and pressure tested to ensure reliable performance. A new water pump impeller is installed during servicing, while internal components are inspected under magnification. OEM gears are retained whenever they meet Mercury factory specifications for dependable operation and extended service life. Ready for installation and backed by a 1-Year Warranty, this lower unit is an excellent replacement for damaged or worn gearcases.

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Key Features

• Genuine OEM Mercury Counter Rotation Lower Unit
• Counter-Rotating (Left-Hand Rotation)
• Fits Mercury 200HP, 225HP & 250HP V6 Outboards
• 25-Inch Shaft
• 1.75:1 Gear Ratio
• Professionally Inspected
• Fully Resealed
• Pressure Tested
• New Water Pump Impeller Installed
• Internal Components Inspected Under Magnification
• OEM Gears Retained When Within Specification
• Ready for Installation
• 1-Year Warranty Included

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Technical Specifications

Specification	Details
Brand	Mercury
Product Type	Counter Rotation Lower Unit
Condition	Professionally Serviced
Rotation	Counter Rotation (Left-Hand)
Gear Ratio	1.75:1
Shaft Length	25 Inches
Horsepower	200 HP / 225 HP / 250 HP
Engine Type	V6
Model Years	1994–1998
Driveshaft Length	26-7/16 Inches
Driveshaft Splines	13
Prop Shaft Splines	15

Driveshaft length is measured from the top of the water pump to the top of the driveshaft.

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Compatible Applications

Designed for select Mercury V6 outboard engines including: Model Years

• 1994
• 1995
• 1996
• 1997
• 1998

Horsepower

• 200 HP
• 225 HP
• 250 HP

Engine Type

• Mercury V6

Shaft Length

• 25-Inch

Gear Ratio

• 1.75:1

Rotation

• Counter Rotation (Left-Hand)

Important: Always verify your engine's model number, serial number, shaft length, gear ratio, rotation, and OEM part number before purchasing. If you need assistance confirming compatibility, our team is happy to help.

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Condition

This lower unit has been professionally serviced and thoroughly inspected before being offered for sale. Service and inspection include:

• Complete disassembly and inspection
• Internal components inspected under magnification
• Fully resealed
• Pressure tested to ensure leak-free performance
• New water pump impeller installed
• OEM gears retained when they meet factory specifications
• Ready for installation

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

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What's Included

Your purchase includes:

• Mercury Counter Rotation Lower Unit Assembly
• New Water Pump Impeller
• Professionally Resealed and Pressure-Tested Gearcase

Only the components shown in the product photos are included.

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Shipping Information

Every lower unit is carefully packaged to protect it during shipping. We offer fast shipping throughout the United States, with international shipping available upon request. For an accurate shipping quote, please provide:

• Country
• ZIP or Postal Code
• Commercial or Residential Address
• Whether liftgate service is required

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Warranty

This Mercury Counter Rotation Lower Unit is backed by a 1-Year Warranty. If the lower unit experiences a covered failure during normal operation within the warranty period, EZ Boats Marine will repair, replace, or refund the item if a replacement is unavailable, in accordance with our warranty policy.

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Why Buy from EZ Boats Marine?

• Genuine OEM Mercury Marine Parts
• Professionally Serviced Lower Units
• Counter-Rotation Configuration for Twin-Engine Applications
• Fully Resealed and Pressure Tested
• New Water Pump Impeller Installed
• OEM Internal Components
• 1-Year Warranty Included
• Secure Packaging
• Fast Nationwide and International Shipping
• Experienced Marine Customer Support

EZ Boats Marine is committed to supplying premium OEM marine components backed by dependable service, expert support, and reliable performance.

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Frequently Asked Questions

Which Mercury outboards does this lower unit fit?

This lower unit fits select 1994–1998 Mercury V6 200HP, 225HP, and 250HP outboards equipped with a 25-inch shaft, 1.75:1 gear ratio, and counter-rotation (left-hand rotation) configuration. Always verify your engine's model number, serial number, and OEM specifications before ordering.

What is a counter-rotation lower unit?

A counter-rotation lower unit turns the propeller in the opposite direction of a standard gearcase. It is commonly used on twin-engine boats to improve handling, reduce steering torque, and increase overall performance.

Has this lower unit been professionally serviced?

Yes. It has been completely disassembled, inspected, fully resealed, pressure tested, and fitted with a new water pump impeller before being offered for sale.

Is gear oil included?

No. Gear lubricant is not included and must be added before operating the lower unit.

Does this lower unit include a warranty?

Yes. This Mercury Counter Rotation Lower Unit is backed by a 1-Year Warranty, providing added confidence and peace of mind with your purchase.