Mercury XL 25" Lower Unit | 1.87:1 Gear Ratio | Fits 1976 & Up Mercury V6 175HP 200HP 2.0L 2.4L 2.5L | 6 Month Warranty

Product Overview

Replace your worn or damaged gearcase with this genuine OEM Mercury XL 25" Lower Unit, designed for 1976 & newer Mercury V6 2.0L, 2.4L, and 2.5L outboard engines producing 175HP and 200HP. Featuring a 1.87:1 gear ratio, this freshwater lower unit has been professionally inspected, pressure tested, and fitted with a new water pump impeller to ensure dependable performance. This OEM lower unit is ideal for carbureted, EFI, and Optimax Mercury outboards utilizing the 25-inch XL shaft configuration. All driveshaft and propshaft splines are in excellent condition, while the shafts have been checked for straightness. The skeg has a small chip at the tip that is cosmetic only and does not affect functionality. Whether you're replacing a failed gearcase or restoring your Mercury outboard, this genuine OEM lower unit offers factory fitment and reliable performance.

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Key Features

• Genuine OEM Mercury XL Lower Unit
• Fits Mercury V6 2.0L, 2.4L & 2.5L outboards
• Compatible with Carbureted, EFI & Optimax models
• 1.87:1 gear ratio
• Freshwater unit
• Pressure tested to a minimum of 12 PSI
• New water pump impeller installed
• Driveshaft and propshaft inspected for straightness
• 6-month mechanical warranty
• Ready to install (gear oil not included)

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Technical Specifications

Specification	Details
Brand	Mercury
Product Type	Complete Lower Unit
Condition	Used – Good Condition
Shaft Length	25" XL
Gear Ratio	1.87:1
Driveshaft Length	Approx. 26-1/4" (measured from top of water pump)
Driveshaft Splines	8
Propshaft Splines	15
Engine Compatibility	Mercury V6 2.0L, 2.4L & 2.5L

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Compatible Applications

Designed for select Mercury outboards including: Model Years

• 1976 & Up

Horsepower

• 175 HP
• 200 HP

Engine Compatibility

• Mercury 2.0L V6
• Mercury 2.4L V6
• Mercury 2.5L V6
• Carbureted Models
• EFI Models
• Optimax Models

Shaft Length

• 25" XL

Important: Always verify compatibility using your engine's model and serial number before purchasing. If you need assistance confirming fitment, contact EZ Boats Marine and we'll be happy to help.

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Condition

This Mercury XL lower unit has been professionally inspected and is in good freshwater used condition. Inspection highlights include:

• Freshwater unit
• Pressure tested to a minimum of 12 PSI
• New water pump impeller installed
• Driveshaft and propshaft checked for straightness
• Driveshaft splines in excellent condition
• Propshaft splines in excellent condition
• Small chip on the skeg tip (cosmetic only)
• Ready for installation
• Gear oil must be added before use

Please review all product photos carefully to evaluate the cosmetic condition before purchasing.

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What's Included

Your purchase includes:

• OEM Mercury XL 25" Complete Lower Unit

Only the components shown in the product photos are included.

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Shipping Information

Your lower unit will be professionally packaged to help prevent shipping damage during transit. 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
• Residential or Commercial Address
• Whether liftgate service is required

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Why Buy from EZ Boats Marine?

• Genuine OEM Mercury Marine Parts
• Professionally Inspected Components
• Freshwater OEM Parts
• Factory Fit and Finish
• Honest Condition Descriptions
• Fast Nationwide & International Shipping
• Secure Packaging
• Experienced Marine Parts Specialists
• Dedicated Customer Support

EZ Boats Marine is committed to supplying quality OEM marine parts backed by expert service and dependable support.

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Frequently Asked Questions

Is this a genuine Mercury lower unit?

Yes. This is an original OEM Mercury XL lower unit removed from a freshwater engine.

What condition is it in?

The lower unit is in good used condition. It has been pressure tested, fitted with a new impeller, and the shafts have been inspected for straightness. The only noted cosmetic flaw is a small chip on the skeg tip.

Which engines does it fit?

This lower unit fits select 1976 & newer Mercury V6 2.0L, 2.4L, and 2.5L carbureted, EFI, and Optimax outboards with a 25-inch XL shaft, including 175HP and 200HP models.

Is it ready to install?

Yes. It is ready for installation. Gear oil is not included and must be added before operation.

What does the warranty cover?

This lower unit includes a 6-month mechanical warranty covering the gears, bearings, and shafts. The warranty does not cover seals.

Can EZ Boats Marine verify fitment?

Absolutely. Simply send us your Mercury engine's model and serial number, and we'll confirm whether this OEM XL 25" lower unit is the correct fit before you purchase.